Elements that typically attracts electrons are what
Answers
non metals
elements that always gain electrons from other elements(mainly metals) are called non metallic elements. During a reaction all non metallic elements gain or receive electrons and all metals lose or give electrons. The most non metallic elememt is Flourine, meaning that is gains or receive many electrons during a reaction with another metal.
Related Questions
What happens to the hydrogen and oxygen molecules when they rearrange to from water.something must be recombined.How does this happen?
Answers
When the preexisting molecular links are broken and new bonds are created between oxygen and hydrogen atoms, hydrogen molecules react strongly with oxygen molecules.
The outcome is an explosive release of energy and the formation of water since the reaction's products are at a lower energy level than its reactants.
What kind of response takes place when water is created?The most well-known instance of a synthesis reaction is the burning of hydrogen and oxygen to produce water.
What causes water to form?Most of the water that was created was in the form of vapors, which mixed with cosmic dust on the way to the earth's surface. These water vapors condensed into oceans, seas, rivers, and lakes when the world first came into existence.
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What is enthalpy change and volume change of mixing of two components forming an ideal solution?
Answers
Enthalpy change of mixing refers to the energy change during the formation of an ideal solution. Volume change of mixing relates to the change in volume resulting from the mixing process.
What is enthalpy ?Enthalpy is a thermodynamic property that represents the total heat content of a system at constant pressure. It encompasses both the internal energy of the system and the work done by or on the system. Enthalpy is denoted by the symbol "H" and is typically measured in units of energy, such as joules (J) or calories (cal). Enthalpy accounts for the energy transferred as heat during chemical reactions or phase changes. Enthalpy is crucial in studying and analyzing various phenomena, including chemical reactions, phase transitions, and energy transfers in thermodynamic systems.
Volume change of mixing, on the other hand, relates to the change in volume resulting from the mixing process. It accounts for the variation in molecular interactions and the resulting effects on the overall volume of the mixture compared to the volumes of the individual components.
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The solubility of water is 0.13g/L at 90kPa. What is the solubility when the pressure of the gas is increased to 150 kPa? Assume the temperature remains constant.
Answers
Answer:
Explanation:
The solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. This relationship is known as Henry's Law. According to Henry's Law, the solubility of the gas in the liquid is given by:
C = k * P
where C is the concentration of the gas in the liquid (in g/L), P is the partial pressure of the gas (in kPa), and k is a constant that depends on the gas and the temperature.
To find the solubility of water at a pressure of 150 kPa, we can use the following equation:
C2 = (P2/P1) * C1
where C1 is the solubility of water at a pressure of 90 kPa (0.13 g/L), P1 is the initial pressure (90 kPa), P2 is the final pressure (150 kPa), and C2 is the solubility of water at a pressure of 150 kPa (which we want to find).
Substituting the values into the equation, we get:
C2 = (150/90) * 0.13 g/L
C2 = 0.217 g/L
Therefore, the solubility of water is 0.217 g/L at a pressure of 150 kPa, assuming the temperature remains constant.
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Combustion analysis-empirical formula
I'm having trouble understanding the concept could someone help me to understand how to solve a question like this?
Answers
The complete empirical formula of the organic compound is C₅H₂.
What is empirical formula?Empirical formula is the simplest formula of an organic compound. The balanced chemical equation of the given organic compound can be determined using the general formula for balancing oxidation reaction of organic compounds as shown below.
\(C_xH_y + (x+ \frac{y}{4} )O_2 = xCO_2 \ + \ \frac{y}{2} H_2O\)
Number of moles of the carbon dioxideMolecular mass of CO2 = 44 g/mol
mole = reacting mass /molecular mass
mole = 4.4/44 = 0.1
Number of moles of watermole = 0.72/18 = 0.04
From the empirical formula, we have \([?]_5H_{[?]} = C_5H_{[?]}\)
\(0.1 \times n = 5\\\\ n = \frac{5}{0.1} = 50\)
From the result above, if we multiply 0.1 by 50 we will have 5 which is already given to us as C₅.
\(x = 0.1 \times 50\\\\x = 5\)
Then multiply 0.04 for y by the same factor.
\(y = 0.04 \times 50\\\\y = 2\)
Thus, the complete empirical formula of the organic compound is C₅H₂.
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Find the number of moles of water that can be formed if you have 154 mol of hydrogen gas and 72 mol of oxygen gas.
Answers
Answer:
The answer is 144 mol.
Explanation:
"72 mol of oxygen will form only 144 mol of water, and 10 mol of hydrogen remain in excess, so the limiting reactant is oxygen and hydrogen is in excess."
Use Le Châtelier’s Principle to predict the shift in equilibrium (Left, Right, No Change) for each of the following:
REACTIONS:
A. CH4(g) + 2 O2(g) ⇌ CO2(g) + 2 H2O(g) ΔH = -230 kJ
4 Al(s) + 3 O2(g) ⇌ 2 Al2O3(s) + 150 kJ
C. N2(g) + 3 H2(g) ⇌ 2 NH3(g) ΔH = + 22 kJ
D. 2 H2O(l) + 58 kJ ⇌ 2 H2(g) + O2(g)
_____ 1. Pressure decrease for reaction A
_____ 2. Pressure increase for reaction B
_____ 3. Adding heat in reaction C
_____ 4. Decreasing heat in reaction D
_____ 5. Increasing [N2] in reaction C
_____ 6. Decreasing [H2O] in reaction D
_____ 7. Adding heat in reaction A
_____ 8. Pressure increase for reaction D
_____ 9. Increasing [Al2O3] in reaction B
_____ 10. Pressure decrease for reaction C
_____ 11. Decreasing [CO2] in reaction A
_____ 12. Decreasing heat in reaction B
_____ 13. Addition of a catalyst to reaction B
_____ 14. Increasing [O2] in reaction B
_____ 15. Pressure increase for reaction C
Answers
2. No Change
3. Left
4. Right
5. Right
6. Left
7. Left
8. No Change
9. No Change
10. Right
11. Left
12. Right
13. No Change
14. No Change
15. Left
Explanation:
1. According to Le Châtelier's Principle, a decrease in pressure favors the side with fewer moles of gas. In this case, the reaction will shift to the right to produce more gaseous products and decrease the pressure.
2. Increasing the pressure of a reaction favors the side with fewer moles of gas. In this case, there is no change in the number of moles of gas on either side of the reaction, so the equilibrium position will not shift.
3. Adding heat to an exothermic reaction (one with a negative ΔH value) will shift the equilibrium to the left to absorb the excess heat.
4. Decreasing heat in an endothermic reaction (one with a positive ΔH value) will shift the equilibrium to the left to generate more heat.
5. Increasing the concentration of a reactant will shift the equilibrium to the right to counteract the increase.
6. Decreasing the concentration of a reactant will shift the equilibrium to the left to counteract the decrease.
7. Adding heat to an exothermic reaction (one with a negative ΔH value) will shift the equilibrium to the left to absorb the excess heat.
8. Increasing the pressure of a reaction favors the side with fewer moles of gas. In this case, there is no change in the number of moles of gas on either side of the reaction, so the equilibrium position will not shift.
9. Adding product to a reaction will not shift the equilibrium position, according to Le Châtelier's Principle.
10. Decreasing the pressure of a reaction favors the side with more moles of gas. In this case, the reaction will shift to the right to produce more gas and increase the pressure.
11. Decreasing the concentration of a product will shift the equilibrium to the right to counteract the decrease.
12. Decreasing the temperature of an endothermic reaction (one with a positive ΔH value) will shift the equilibrium to the right to generate more heat.
13. Adding a catalyst will not shift the equilibrium position, according to Le Châtelier's Principle.
14. Increasing the concentration of a reactant will not shift the equilibrium position, according to Le Châtelier's Principle.
15. Increasing the pressure of a reaction favors the side with fewer moles of gas. In this case, the reaction will shift to the left to decrease the number of gaseous molecules and decrease the pressure.
calculate the molality of a solution that has 18.0g of glucose, C6H12O6, dissolved in 80.0g of water.
Answers
Answer
1.25M
Explanation
to calculate the molality we use the following equation
Molality = moles of solute / Kg of solvent
step 1: to find the moles of glucose we divide the mass by the Molar mass of glucose
moles = mass (g)/ Molar mass (g/mol)
= 18.0 g / 180,156 g/mol
= 0.0999 moles of glucose
now that we have moles of glucose, the next step is to convert 80.0g of water to Kg of water
1 kg = 1000g
Kg of water = 80g/1000g /kg
= 0.08Kg
Molality = 0.0999 mols / 0.08 kg
= 1.25M
determine the ph change when 0.049 mol hclo4 is added to 1.00 l of a buffer solution that is 0.434 m in hclo and 0.223 m in clo-.
Answers
The pH change when 0.049 mol HClO₄ is added to 1.00 l of a buffer solution that is 0.434M in HClO and 0.223 M in ClO⁻ is 0.15.
The pH is given as :
pH = pka + log [base] / [ acid ]
pH = 7.5 + log [0.223] / [0.434]
pH = 7.21
after addition of 0.049 KOH, we get
[base] = ( 0.223mol / L / 1 L + 0.049mol)
[base] = 0.272
[acid] = ( 0.434 mol / L / 1 L - 0.049mol)
[acid]= 0.385
pH = 7.21 + log [ 0.272 ] / [ 0.385]
pH = 7.06
∴ the pH change = 7.06 - 7.21 = 0.15
Thus, The pH change when 0.048 mol HClO₄ is added to 1.00 l of a buffer solution that is 0.434M in HClO and 0.223 M in ClO⁻ is 0.15.
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What is the definition chemical property of matter?
Answers
Answer:
Describes its potential to undergo some chemical change or reaction by virtue of its composition
A gas has a pressure
of 0.12 atm at 21.0°C.
What is the pressure at
standard temperature?
Answers
Answer:
0.12 it is 32.1 *C
Explanation:
at the standard temp
The pressure of the gas at 21°C is 1 atm. Then the pressure at the standard temperature i.e., at 25°C or 298 K is 0.14 atm.
According Gay- Lussacs law, the pressure of the gas is directly proportional to the temperature of the gas at constant volume.
hence, P1/T1 = P2/T2.
given,
P1 = 0.12 atm
T1= 21 °C
T2 = 25°C
then,
P2 = P1 T2/T1
= (0.12 atm ×21 °C)25 °C
= 0.14 atm
The pressure will increase from 0.12 atm to 0.14 atm when the temperature reaches its standard point.
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how much water must be added to 75.0 ml of 0.332 m fecl3(aq) to reduce its concentration to 0.250 m?
Answers
24.6 mL of distilled water must be added to 75.0 ml of 0.332 m FECL3(aq) to reduce its concentration to 0.250 m.
What is concentration?The abundance of a constituent divided by the total volume of a mixture is called concentration.
The reduction of the concentration from 0.332 M to 0.250 M corresponds to the dilution of : 0.332M/0.250 M = 1.328;
Add distilled water to the solution up to 1.328 times the first volume: 75 ml x 1.328 = 99.6 mL.
Now, take the 75 mL of 0.332 M, and add distilled water up to the volume of 99.6 mL, that is you add 24.6 mL of distilled water.
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Given R
008211am
mol K
how many moles of gas are in a 125 L container at 300K and 2.07 atm? (1 point)
0.105 mol
0.067 mol
0.084 mol
9.51 mol
Answers
Answer:
Explanation:
there are a certain amount of atoms
Which best represents a physical change?
A. formation of a new substance
B. formation of a precipitate
C. condensation
D. bubbling
Answers
Answer:
The answer I would go with is A formation of a new substance.
Explanation:
This is because physical change includes changes of state. Some could be changing from a liquid to gas or solid to gas. B is not even an answer that should be considered because it doesn't fit into the category. C and D represents some of the examples of the process of physical change. Like boiling, bubbling, melting, or freezing. So the best would be A.
Which of these factors is involved in earthquake formation?
A. plates getting larger
B. rocks breaking
C. stress that decreases
D. faults that remain stationary
Answers
Answer:
B
Explanation:
Edge 2023
During the breakdown of fatty acids, not all acetyl coa enters the citric acid cycle, and your body converts some acetyl coa to?
Answers
During the breakdown of fatty acids, not all acetyl CoA enters the citric acid cycle, and your body converts some acetyl CoA to ketone bodies.
Acids are molecules or ions that can donate protons, known as Bronsted-Lowry acids, or form covalent bonds with electron pairs, known as Lewis acids. The first category of acids is proton donors or Brønsted-Lowry acids.
Blood is normally slightly alkaline, with a normal pH range of about 7.35 to 7.45. Normally, the body keeps blood pH near 7.40. Doctors measure a person's acid-base balance by measuring the pH of the blood and the levels of carbon dioxide (acid) and bicarbonate (base). No oil is either an acid or a base. Neutral. Oil is a neutral, nonpolar chemical. That is, it is a viscous liquid at room temperature. It is immiscible with water, but soluble in alcohol and ether.
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90. methane, ch4, diffuses in a given apparatus at the rate of 30 ml min–1. at what rate would a gas with a molar mass of 100 diffuse under the same conditions? given: molar mass of ch4: 16.0 g mol–1
Answers
The rate at which a gas with a molar mass of 100 would diffuse under the same conditions is 12 ml/min. The rate of diffusion of a gas is inversely proportional to the square root of its molar mass. So, to find the rate at which a gas with a molar mass of 100 would diffuse under the same conditions as methane, we can use the following formula:
rate of diffusion = (rate of diffusion of methane) x (square root of molar mass of methane/molar mass of the other gas)
Plugging in the given values, we get:
rate of diffusion = 30 ml/min x (square root of 16.0 g/mol / 100 g/mol)
Simplifying, we get:
rate of diffusion = 30 ml/min x (0.4)
Therefore, the rate at which a gas with a molar mass of 100 would diffuse under the same conditions is 12 ml/min.
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In the compound NH3, how are the atoms likely bonded to one another?
(1 point)
O Nitrogen shares one electron with each hydrogen.
O Each hydrogen shares two electrons with nitrogen.
O Each hydrogen donates its one electron to nitrogen.
O Nitrogen donates one electron to each hydrogen.
Answers
Answer
b
Explanation:
because I took the test
Each hydrogen shares two electrons with nitrogen.
NH3 is a molecular compound. In molecular compounds, electrons are shared between the bonding atoms in a covalent bond. The number of electrons shared between atoms depends on the respective valencies of the combining atoms.
Nitrogen has a valency of three and hydrogen has a valency of one. Therefore, in NH3, each hydrogen shares two electrons with nitrogen.
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how many moles of carbon dioxide will form when 2.60 moles of pentane react with excess oxygen?
Answers
When 2.60 moles of pentane react with excess oxygen, 13.0 moles of carbon dioxide will form.
The balanced equation for the combustion of pentane (C₅H₁₂) with oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O) is:
C₅H₁₂ + 8O₂ → 5CO₂ + 6H₂O
From the balanced equation, we can see that for every 1 mole of pentane, 5 moles of carbon dioxide are produced. Therefore, if 2.60 moles of pentane react, we can calculate the moles of carbon dioxide formed using the mole ratio:
2.60 moles C₅H₁₂ x (5 moles CO₂ / 1 mole C₅H₁₂) = 13.0 moles CO₂
Therefore, when 2.60 moles of pentane react with excess oxygen, 13.0 moles of carbon dioxide will form.
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what is 606 as a 2 sig fig answer?
Answers
6, 0
thats the answer, i hope it helps
What are the elements in Water, and what is the number of atoms per element? Please answer ASAP!
Answers
Answer:
H2O with 2 hydrogen and 1 oxygen
A sample of certain gas have Volume of 1.25 L ATM _125 degree Celsius and5.0 ATM the gas is compressed 50.0 ATM a volume of 325 mL. what is final temperature?
Answers
The final temperature of the gas is approximately 40.96 Kelvin.
To determine the final temperature of the gas, we can use the ideal gas law, which states:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature in Kelvin.
First, let's convert the given temperatures to Kelvin. We have:
Initial temperature: -125 degrees Celsius = 148 K (approximate)
Final temperature: Unknown
The initial conditions of the gas are as follows:
Initial pressure (P1) = 1.25 atm
Initial volume (V1) = 1250 mL = 1.25 L (since 1 L = 1000 mL)
Initial temperature (T1) = 148 K
The final conditions of the gas are as follows:
Final pressure (P2) = 50.0 atm
Final volume (V2) = 325 mL = 0.325 L
Final temperature (T2) = Unknown
Using the ideal gas law, we can set up the following equation:
(P1 * V1) / T1 = (P2 * V2) / T2
Substituting the known values:
(1.25 atm * 1.25 L) / 148 K = (50.0 atm * 0.325 L) / T2
Simplifying the equation:
T2 = (50.0 atm * 0.325 L * 148 K) / (1.25 atm * 1.25 L)
T2 = 40.96 K
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6 a What does the sacrificial protection of iron mean?
b Both magnesium and zinc can be used for it. Why?
c But copper will not work. Explain why.
Answers
Explanation:
A-Corrosion
B- Magnesium helps ur body regulates its zinc levels and zinc absorbs into absorbs magnesium more efficiently
Entropy can be thought of as the degree of disorganization of a system.
TRUE
FALSE
Answers
Answer:
True
Explanation:
The entropy of a system denoted by S is a thermodynamic function that increases in value when there are more ways to arrange the particles in the system. Some spontaneous chemical processes are entropy driven. An increase in entropy is said to drive the dissolution of ionic salts along with the evaporation of water are related to the spreading out of energy.
The entropy of a system can be taken as a measure of disorder of a system. In a spontaneous chemical process, the entropy of the universe is said to increase. ΔSunivu>0. Making the answer true.
What is the speed of 550 meters per second in kilometers per second?
Answers
The mass number of Fo? is 56. How many neutrons are there in a single Fo? atom?
28
30
56
58
Answers
Answer: A. 28
If we aren't talking about an isotope, then the number of neutrons and the number of protons in the nucleus are the same. Each proton weighs one atomic unit, and the same can be said about a neutron as well. So half of the weight is from the protons and half is from the neutrons. The electrons are extremely small relative to the protons that their weight is negligible.
What is the end result of a nuclear chain reaction?
Answers
Answer:
A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus.
Hope this helps!
It’s possible to save a great deal of electrical energy (and money and natural resources) with some simple changes in household electrical use. The trouble is that most of these changes mean either changing behavior or spending money. Do an Internet search and review a few ways to save electrical energy. Discuss at least one change that you think would be reasonable and worthwhile to do in your own home in the next year. Provide your rationale.
Answers
One change in homes that could help save electrical energy is to replace all incandescent bulbs with LED bulbs.
How to save electrical energy in homesThere are different ways one can save electrical energy in their home. Some of them include:
Turning off all lights and electrical appliances when not in useReduction of electrical appliances Replacing all incandescent bulbs with LED bulbsLED bulbs are known as Light-Emitting Diode bulbs. They are energy-saving bulbs, although might be more expensive than their incandescent counterparts.
According to research, LED bulbs have the capacity to save up to 75% of energy compared to other bulbs. Thus, if anyone is looking to save electrical energy and they have incandescent bulbs at some lighting points, they will get very good results by replacing them with LED bulbs.
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Answer: One change in homes that could help save electrical energy is to replace all incandescent bulbs with LED bulbs. They are energy-saving bulbs, although might be more expensive than their incandescent counterparts.According to research, LED bulbs have the capacity to save up to 75% of energy compared to other bulbs. Thus, if anyone is looking to save electrical energy and they have incandescent bulbs at some lighting points, they will get very good results by replacing them with LED bulbs.Turning off all lights and electrical appliances when not in use. Reduction of electrical appliances. For tv, set brightness, contrast and enable power saving mode. These are two other ways to consume less energy in your home.
Explanation: I hope this helps
If the electronnegavity difference between elements A and X is 0.8, the bond in AX will most likely be what?
Answers
Answer:
Polar covalent bond
Explanation:
When the electronegativity difference between two elements A and X is 0.8, the bond AX formed will most likely be a polar covalent bond.
A polar covalent bond is one whose electronegativity difference is between 0.5 and 2.1.
In such a bond type, we have heteronuclear species with one of the species having a higher electronegativity value.
When electronegativity difference is less than 0.5, a non-polar covalent bond forms. If the value is greater than 2.1, an ionic bond will form.the question is on the screenshot worth 20 points pls help
Answers
Answer:
Cell Y Only
Explanation:
The process of water migrating from areas of low electrolyte concentration to area of high electrolyte concentration is called ———————. ——————— is the medicine term for the swelling of the brain
Answers
Answer:1-Diffusion
2-Cerebral edema
Explanation:
The process of water migrating from areas of low electrolyte concentration to areas of high electrolyte concentration is called diffusion.
Cerebral edema is the medical term for the swelling of the brain.
What is diffusion?Diffusion is a process where the substance or ions of from a low concentration to a high concentration. It occurs against the concentration gradient, so it needs energy.
Cerebral edema is a condition where fluid gets filled in the brain and the brain swells and make pressure on the skull called intracranial pressure.
Thus, Diffusion is the mechanism by which water moves from regions with low electrolyte concentrations to regions with high electrolyte concentrations.
The medical term for brain swelling is cerebral edema.
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