Answers
Related Questions
What are aliphatic aldehydes? Class 12
Answers
Answer:
Explanation: The aldehydes in which the aldehydic functional group (−CHO) is attached to a saturated carbon chain are called Aliphatic aldehydes.
Which type of rock typically has the largest formed crystals?
A) metamorphic
B) sedimentary
C) extrusive igneous (Its not C)
D) intrusive igneous
Answers
It’s D bro bro
Plus u can look up the rocks one by one and just put creates crystals?
Answer:
ITS D
Explanation:
DID THE USATESTPREP
1. What is Mars ? Explain your answer.
What is Earth ? Explain your answer.
.
Answers
Mars is the fourth planet.
Earth is the third planet.
Both revolve around the Sun.
Both are rocky planets.
Earth is habitable for carbon based life forms.
Mars is not habitable for carbon based life forms.
When dipentyl ether is treated with HI, what type of reaction occurs? both SN1 and SN2 SN2 E1 SN1 E2
Answers
Answer:
SN2
Explanation:
The first step of ether cleavage is the protonation of the ether since ROH is a better leaving group than RO-.
The second step of the reaction may proceed by either SN1 or SN2 mechanism depending on the structure of the ether. Methyl and primary ethers react with HI by SN2 mechanism while tertiary ethers react with HI by SN1 mechanism. Secondary ethers react with HI by a mixture of both mechanisms.
Dipentyl ether is a primary ether hence when treated with HI, the reaction with HI proceeds by SN2 mechanism as explained above.
What is the mass of a rectangular piece of copper 24.4cm x 11.4 cm x 7.9 cm? The density of copper is 8.92g/cm3.
Answers
The mass of the rectangular piece of copper is 18,869 g (approx).In conclusion, the mass of a rectangular piece of copper with dimensions 24.4cm x 11.4 cm x 7.9 cm and a density of 8.92 g/cm³ is 18,869 g (approx.).
The given dimensions of the rectangular piece of copper are:Length = 24.4 cmWidth = 11.4 cmHeight = 7.9 cmThe formula to calculate the mass of an object is given by;
Mass = Density x Volume
Here, the density of copper is given as 8.92 g/cm³.
Therefore, the first step is to calculate the volume of the rectangular piece of copper.The formula to calculate the volume of a rectangular object is given by:
Volume = Length x Width x Height
So,Volume = 24.4 cm x 11.4 cm x 7.9 cm= 2115.432 cm³Now we will use the mass formula:
Mass = Density x Volume= 8.92 g/cm³ x 2115.432 cm³= 18,869.27824 g= 18,869 g (approx.)
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11. Write down the molecular formula of following compounds by
criss-cross
method
a. Ammonia
b. Methane
c. Common salt
d.Limestone
e.Hydrochleric acid
f.Caustic soda
Answers
Answer:
a. NH3
b.
c. NaCl
d.
e. HCl
f.
In this reaction, ethane is burned in the presence of oxygen (O2 O 2 ) to form carbon dioxide (CO2 C O 2 ) and water (H2O H 2 O ). ____C2H6(g)+____O2(g)→____CO2(g)+____H2O(g) _ _ _ _ C 2 H 6 ( g ) + _ _ _ _ O 2 ( g ) → _ _ _ _ C O 2 ( g ) + _ _ _ _ H 2 O ( g )
Answers
Answer:
C₂H₆(g) + 7/2 O₂(g) → 2 CO₂ + 3 H₂O
Explanation:
To balance equations of combustion (Chemical + O₂ producing CO₂ and water you must do:
1. Write as CO₂ as carbons in the chemical you have:
For the reaction:
C₂H₆(g) + O₂(g) → CO₂ + H₂O
As you have 2 carbons in ethane:
C₂H₆(g) + O₂(g) → 2 CO₂ + H₂O
2. Write the half of H₂O as hydrogen you have:
There are 6 hydrogens → You must place 3 H₂O:
C₂H₆(g) + O₂(g) → 2 CO₂ + 3 H₂O
3. The last step is to write the half of oxygens you have in products.
4 Oxygens from CO₂ and 3 from water:
C₂H₆(g) + 7/2 O₂(g) → 2 CO₂ + 3 H₂OTrue or False?
Sedimentary rocks can weather, erode and then become a different sedimentary rock, as seen in the rock cycle.
Answers
Answer:
True
Explanation:
The sedimentary particles from which a sedimentary rock is formed can be derived from a metamorphic, an igneous, or another sedimentary rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.
Why is scientific notation used?
to round numbers to the nearest whole number
to promote reproducibility of data
to increase the validity of data
to express very large or very small numbers
Answers
The correct option is (d) To express very large or very small number.
What is the Scientific Notation?
Scientific notation is a way to present numbers that are too large or too small to be easily written in decimal form. The three components of scientific notation are coefficient, base and exponent. The proper format to write a scientific notation is a x 10^b, where a is a number or decimal number and b is the power of 10 to make scientific notation equivalent to original number. When a number between 1 and 10 is multiplied by a power of 10 then the number is expressed in scientific notation. For example, 10000000 can be written as 10⁷, which is the scientific notation and the exponent is positive here. Similarly, for the negative exponent 0.000001 can be can be represented as 10-⁷. Hence, the scientific notation is used to express very large or very small numbers.
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How many grams of CO2 is released when 35 grams of C5H12 is burnt in excess oxygen.
Answers
Answer:
The reaction will give off 140 kJ of heat.
Explanation:
which is the most fluorescent molecule?
Answers
3. A solution of hydrochloric acid is made by dissolving hydrogen chloride gas in 100.0ml water. This solution neutralizes a 15ml sample of 0.10 mol/L sodium carbonate solution. a. What mass of hydrogen chloride gas was dissolved in 100.0ml of water? b. What volume of hydrogen chloride was this?
Answers
Okay, here are the steps to solve this problem:
a) To neutralize 15ml of 0.10 mol/L sodium carbonate solution, the hydrochloric acid solution must contain 0.015 moles of HCl.
Since the HCl solution is made by dissolving HCl gas in 100ml water, we can calculate the moles of HCl gas dissolved in 100ml:
0.015 moles HCl / 15ml sodium carbonate solution = X moles HCl gas / 100ml HCl solution
X = 0.015 * (100/15) = 0.01 moles HCl gas
b) Molar volume of HCl gas at STP is 24.45 L/mol.
So the volume of 0.01 moles HCl gas is: 0.01 moles * 24.45 L/mol = 0.2445 L
Since the solution is made with this gas in 100ml water, the volume of HCl gas dissolved in 100ml water is 0.2445 L.
So the final answers are:
a) 0.01 moles of HCl gas
b) 0.2445 L of HCl gas
Please let me know if you have any other questions!
write the atomicity of oxygen
Answers
Assuming ideal solution behavior, what is the boiling point of a solution of 115.0 g of nonvolatile sucrose (table sugar), C₁₂H₂₂O₁₁ (342.300 g/mol), in 350.0 g of water (Kb = 0.512 °C m⁻¹; boiling point = 100.0 °C)?
a.)
100.00049 °C
b.)
99.5 °C
c.)
268.2 °C
d.)
100.5 °C
Answers
The boiling point of water is 100.0 °C, the boiling point of the solution will be : 101.49 °C.The correct answer is option (a) 100.00049 °C.
Ideal Solution : An ideal solution is a homogeneous mixture of two or more components that obeys Raoult's law, which states that each component's vapor pressure is proportional to its mole fraction.The boiling point of a solution depends on the solvent's properties and the solute's concentration. It's dependent on the mole fraction of the solvent and solute, as well as the total concentration of the solution. The change in boiling point of a solution is given byΔTb = Kb × m × i, whereKb = ebullioscopic constant, m molarity of the solution, and i = van't Hoff factor.Assuming that the solution's behavior is ideal, we may use the molality of the solution to compute the boiling point elevation of the solution.The molality of the solution is given by the following formula:m = (n₂ / m₂) ÷ (n₁ / m₁), where n is the number of moles, m is the mass, and the subscripts 1 and 2 refer to water and non-volatile solute sucrose, respectively.The molar mass of sucrose (C₁₂H₂₂O₁₁) is342.3 g/mol; therefore, the number of moles of sucrose is115.0 g ÷ 342.3 g/mol = 0.335 mol.m₁ = mass of water = 350.0 g, and m₂ = mass of sucrose = 115.0 g, as given in the problem.Therefore, the molality of the solution is given by:m = (0.335 mol / 0.115 kg) ÷ (1 mol / 1 kg) = 2.91 mol/kg.Substituting these values in the formula for ΔTb, we get:ΔTb = Kb × m = 0.512 °C m⁻¹ × 2.91 mol/kg = 1.49 °C.100.0 °C + 1.49 °C = 101.49 °C.
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How do new traits enter a population?
Answers
Explanation: new borns are given traits based off their parents but also new traits that are developed off of their own. Now if that population has access to resources and a lot of it. Chances are they will become bratty,selfish and things such as.
Consider the following reaction: 2N2O5(g) → 4NO2(g) + O2(g) Calculate the volume N2O5 that must decompose completely to produce 9.64 L nitrogen dioxide.
Answers
The volume of \(N_2O_5\) needed to produce 9.64 L of \(NO_2\) is 4.97 L, calculated using stoichiometry and the ideal gas equation.
The given chemical equation is \(2N_2O_5(g) \rightarrow 4NO_2(g) + O_2(g)\) .The volume of \(N_2O_5\) that decomposes completely to form 9.64 L of \(NO_2\) is to be calculated. For this, we can use the concept of stoichiometry. Stoichiometry is a branch of chemistry that deals with the quantitative relationships between reactants and products in a balanced chemical equation.To calculate the volume of \(N_2O_5\) that is needed to produce 9.64 L of \(NO_2\), we will first determine the number of moles of NO2 produced in the reaction. For this, we can use the ideal gas equation, PV = nRT. Here, we have the volume of NO2 and we can assume the pressure and temperature to be constant. Thus, we have PV = nRT, where P = pressure, V = volume, n = number of moles, R = ideal gas constant, and T = temperature. Substituting the given values in the ideal gas equation, we get,n = PV/RT = (1 atm × 9.64 L)/(0.0821 L atm K-1 mol-1 × 300 K) = 0.404 molFrom the chemical equation, we see that 2 moles of \(N_2O_5\) give 4 moles of \(NO_2\). Thus, 0.404 mol of \(NO_2\) must have been produced from (0.404/2) = 0.202 mol of \(N_2O_5\). Using the ideal gas equation, we can also find the volume of 0.202 mol of \(N_2O_5\) at the given conditions. Thus, V = nRT/P = (0.202 mol × 0.0821 L atm K-1 mol-1 × 300 K)/1 atm = 4.97 L. Thus, the volume of \(N_2O_5\) that must decompose completely to produce 9.64 L nitrogen dioxide is 4.97 L.For more questions on stoichiometry
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If you know the answer tell me please
Answers
Metamorphic rocks can be harder, less porous, and have crystals that can be lined, describing some of the ways in which metamorphic rocks differ from sedimentary rocks.
There are two different types of rocks: sedimentary rocks and metamorphic rocks. Igneous or sedimentary pre-existing rocks undergo changes under extreme heat and pressure to form metamorphic rocks. This process results in the recrystallization of minerals, leading to the formation of a new rock with distinct physical and chemical characteristics.
Therefore, the correct option is B.
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Blue light has a frequency of 6.46 x 10^14 s-1. What is the energy of one quantum of blue light?
Answers
The energy of one quantum of blue light that has a frequency of 6.46 x 10¹⁴ s-¹ is 4.28 × 10-¹⁹J.
How to calculate energy of a photon?A photon refers to the quantum of light and other electromagnetic energy, regarded as a discrete particle having zero rest mass, no electric charge, and an indefinitely long lifetime.
The energy of a photon can be calculated by using the following formula:
E = hf
Where;
E = energy (Joules)h = Planck's constant (6.626 × 10-³⁴J/s)f = frequencyAccording to this question, blue light has a frequency of 6.46 x 10¹⁴ s-¹. The energy can be calculated as follows:
E = 6.626 × 10-³⁴ × 6.46 x 10¹⁴
E = 4.28 × 10-¹⁹J
Therefore, 4.28 × 10-¹⁹J is the energy of the blue light.
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how many moles of CO2 are in 35.0 liters of CO2 at STP?
Answers
Answer:
75300g ..........................
what's the basicity of HBr?
Answers
Hydrogen bromide
Basicity (pKb) ~23
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Would a highly conductive, malleable, and lustrous solid be a metal, nonmetal, or metalloid?
Answers
use the slider or the + or - signs above the periodic table to increase or decrease the temperature of the elements which are gasses at 25 degrees Celsius? select each element that is a gas at 25 degrees celsius
Answers
The elements that is a gas at 25 degrees Celsius are given below.
What do you mean by Gas?
Gas is a state of matter in which a substance exists as a collection of molecules in constant random motion, dispersed throughout a given volume. Gases differ from solids and liquids in that they have neither a definite shape nor a definite volume. Examples of gases include air, oxygen, nitrogen, carbon dioxide, and methane.
- Hydrogen
- Helium
- Oxygen
- Nitrogen
- Neon
- Fluorine
- Chlorine
- Argon
At 25 degrees Celsius, all of these elements exist as gases under standard atmospheric pressure.
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Determine the molarity of 1.2 mol KCl in 1.1 L of a solution?
Answers
Answer:
1.1 M
General Formulas and Concepts:
Molarity = moles of solute / liters of solutionExplanation:
Step 1: Define variables
1.2 mol KCL
1.1 L of solution
M = unknown
Step 2: Solve for Molarity
Substitute: M = 1.2 mol/1.1 LEvaluate: M = 1.09091Step 3: Check
We are given 2 sig figs. Follow sig fig rules.
1.09091 M ≈ 1.1 M
If you have a density of 3 g/mL and a mass of 15 g, what is the volume?
Answers
Answer:
15 ml
Explanation:
Volume = mass / density.
So our answer is 15 / 3 = 15 mL
Answer:
5mL
Explanation:
ρ=m/V
V=m/ρ=15/3=5 mL
Hope, this helps you.
4) A 100g piece of iron at 150°C is emersed in 268.5 g of water at 20°C. the temperature of both iron and water became 25°C. If the specific heat of iron is 0.449 J/g.K, find the specific heat of water?
Answers
Answer:
The specific heat of water would be 4.18 J/gK.
Explanation:
You can realize that iron is losing heat and water is gaining heat. Based on the energy conservation law:
\(Heat\text{ lost by iron = Heat gained by water.}\)We want to find the specific heat of water 'c'. The formula of each heat - lost or gained- is:
\(q=c\cdot m\cdot\Delta T.\)You can see that the change of temperature of iron is from 150 °C to 25 °C and the change of temperature of water is from 20 °C to 25 °C. Remember that the formula of ΔT is:
\(ΔT=|Final\text{ temperature-Initial temperature\mid}\)The change of temperature in celsius will be the same in kelvin. So our initial formula would be:
\(\begin{gathered} Heat\text{ lost by iron=Heat gained by water} \\ c_{iron}\cdot m_{iron}\cdot\Delta T=c_{water}\cdot m_{water}\cdot\Delta T \\ 0.449\text{ }\frac{J}{g\cdot K}\cdot100g\cdot|25-150|K=c_{water}\cdot268.5g\cdot|25-20|K. \end{gathered}\)And finally, we solve for 'c' of water:
\(\begin{gathered} 5612.5\text{ J=c}_{water}\cdot1342.5\text{ g}\cdot K, \\ c_{water}=\frac{5612.5\text{ J}}{1342.5\text{ g}\cdot K}, \\ c_{water}=4.18\frac{J}{g\cdot K}. \end{gathered}\)The specific heat of water would be 4.18 J/gK.
Mass can be changed into energy in a ____ reaction
A)Chemical
B)Nuclear
Answers
A sample of N2 has 1.70 moles and occupies 3.80 L at 25°C. How many moles are in a sample that occupies 1.45 L? Answer should be numbers only, no units, to 2 decimal places
Answers
The concept Avogadro's law is used here to determine the moles of gas present in the sample. Avogadro's law is also known as the Avogadro's principle or Avogadro's hypothesis. It is closely related to the ideal gas equation.
According to Avogadro's law, equal volumes of all gases under similar conditions of temperature and pressure contain equal number of molecules. It follows that the volume of the gas is directly proportional to the number of molecules.
The equation is:
V₁n₁ = V₂n₂
n₂ = V₁n₁ / V₂
3.80 × 1.70 / 1.45 = 4.45
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How much energy would be released as 95.0 g of acetic acid crystallized?
Answers
Answer:
-18.54kJ of energy would be released
Explanation:
The enthalpy of crystallization is defined as the heat released when 1 mole of a substance change its state from liquid to solid. The ΔHcrystallization of acetic acid is -11.72kJ/mol (ΔHcrystallization = - ΔHfusion).
To solve this question we must convert the mass of acetic acid to moles in order to find the heat released:
Moles acetic acid -Molar mass: 60.052g/mol-:
95.0g * (1mol / 60.052g) = 1.58 moles
Heat released:
1.58 moles * (-11.72kJ/mol) =
-18.54kJ of energy would be releasedWhat mass in grams of tin would be required to completely react with 1.20 L of 0.750 M HBr in the following chemical reaction?
Sn(s) + 4 HBr(aq) → SnBr₄ (aq) + 2 H₂ (g)
Answers
26.71 g mass of tin would be required to completely react with 1.20 L of 0.750 M HBr.
What is mass ?
Mass is a measure of the amount of matter in an object or substance. It is often expressed in units of grams (g) or kilograms (kg). Mass is a fundamental property of matter and is different from weight, which is the force exerted on an object by gravity and varies depending on the object's location. Mass can be measured using a balance or scale, and is an important factor in many chemical calculations and experiments, such as determining the amount of reactants needed for a reaction or the concentration of a solution.
First, we need to determine the number of moles of HBr in the solution:
moles of HBr = Molarity x Volume
moles of HBr = 0.750 mol/L x 1.20 L
moles of HBr = 0.900 mol
According to the balanced chemical equation, 1 mole of Sn reacts with 4 moles of HBr to produce 1 mole of SnBr₄. Therefore, the number of moles of Sn required can be calculated as:
moles of Sn = (moles of HBr) / 4
moles of Sn = 0.900 mol / 4
moles of Sn = 0.225 mol
The molar mass of Sn is 118.71 g/mol, so the mass of Sn required can be calculated as:
mass of Sn = moles of Sn x molar mass of Sn
mass of Sn = 0.225 mol x 118.71 g/mol
mass of Sn = 26.71 g
Therefore, 26.71 g of tin would be required to completely react with 1.20 L of 0.750 M HBr.
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Complete question is: 26.71 g mass in grams of tin would be required to completely react with 1.20 L of 0.750 M HBr in the chemical reaction. Sn(s) + 4 HBr(aq) → SnBr₄ (aq) + 2 H₂ (g)
HELPPP ASAP
DNA utilizes free nucleotides in the cell to manufacture RNA, which is then sent to the ribosome to
A) make RNA.
B) make proteins.
C) make energy.
D) make DNA.
Answers
Answer:
I think the awnser is B proteins
Explanation:
I could be wrong but this is off preveous knowleadge.