Name the following compounds. Do not use italics or boldface. a) N-CH2CH2CH3 = ______. b) NHCH2CH3= ______.

Beryllium bromide is a compound formed by the combination of beryllium and bromine atoms. Its chemical formula is BeBr₂, indicating that each molecule of beryllium bromide contains one beryllium atom and two bromine atoms.

Beryllium has a 2+ charge, while bromine has a 1- charge. To achieve electrical neutrality, two bromine atoms are needed to balance the charge of one beryllium atom. Beryllium bromide is an ionic compound, characterized by the electrostatic attraction between the positively charged beryllium cation and the negatively charged bromide anions.

It is a white crystalline solid that is highly soluble in water. Beryllium bromide is primarily used in organic synthesis as a Lewis acid catalyst and in some industrial applications. Due to the toxicity of beryllium compounds, including beryllium bromide, proper safety precautions must be taken when handling or working with this substance.

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Answer: The volume is 70872 L

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas (STP) = 1 atm

\(P_2\) = final pressure of gas = 99.2 kPa = 0.98 atm  (1kPa=0.0098atm)

\(V_1\) = initial volume of gas  = 67000 L

\(V_2\) = final volume of gas = ?

\(T_1\) = initial temperature of gas (STP)  = 273K

\(T_2\) = final temperature of gas = \(10.0^0C=(273+10)K=283K\)

Now put all the given values in the above equation, we get:

\(\frac{1\times 67000}{273}=\frac{0.98\times V_2}{283}\)

\(V_2=70872L\)

Thus the volume is 70872 L

Answer:

bec12 is it.one or i it is under 180

Answer:

answer is potasium means k

Answer:

i think potassium

Explaination:

Answer:

Water that falls from the clouds.

Explanation:

Akshay's plasma osmolarity after the infusion mixed with his plasma, but before any water entered his rbc is 6 osmol/L.

Osmolarity is a measure of concentration that reflects the solutions' osmoticity. Osmolarity is how osmolar concentration is expressed.

The osmolarity of Akshay's plasma after the infusion can be calculated using the following formula:

Osmolarity = 2 x [solute concentration]

where solute concentration is the concentration of the solutes in the plasma.

Assuming the IV contained isotonic saline with a concentration of 0.9%, then the solute concentration of Akshay's plasma would be 0.9/1000 * 3L = 0.0027.

Therefore, the osmolarity of Akshay's plasma after the infusion would be 2 x 0.0027 = 0.0054 osmol/L.

Akshay's plasma osmolarity after the infusion mixed with his plasma, but before any water entered his RBC = (3 L x 2 Osmol/L) = 6 osmol/L.

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The statement is true, because when a scientist uses many specific observations to construct a general scientific principle, the scientist is using reasoning.

This is an example of inductive reasoning, which is a form of logical thinking that uses specific observations to create general principles.

The importance of scientists lies in their ability to develop testable explanations and predictions about the universe based on scientific evidence.

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The enthalpy change for the reaction is a measure of the energy difference between the reactants and products.

To determine the mass of iron formed when 725 kJ of heat is released in the given reaction, we need to use the concept of energy and stoichiometry. The balanced equation for the reaction is:

\(2 Al (s) + Fe_2O_3 (s)\) → \(2 Fe (s) + Al_2O_3 (s)\)

We are given the enthalpy change (ΔHrxn) for the reaction, which is -850 kJ. This value represents the energy released when the reaction takes place in the given direction. The enthalpy change for the reaction is a measure of the energy difference between the reactants and products. In this case, since the enthalpy change is negative (-850 kJ), it indicates that the reaction is exothermic, meaning it releases heat. We are asked to find the mass of iron formed when 725 kJ of heat is released. To solve this problem, we'll use a proportionality relationship between the heat released (q) and the amount of iron formed (m):

\(q_1/m_1 = q_2/m_2\)

Where \(q_1\) and \(m_1\) represent the known heat released and mass of iron formed, and \(q_2\) represents the given heat released (725 kJ), and \(m_2\) is the unknown mass of iron formed.

Using this relationship, we can set up the proportion:

-850 kJ/m1 = 725 kJ/m2

To solve \(m_2\), we rearrange the equation:

\(m_2\) = (725 kJ * m_1) / -850 kJ

Now, we need to find the value of \(m_1\), the mass of iron formed when 850 kJ of heat is released. To do this, we can set up a new proportion using the balanced equation:

2 mol Fe / -850 kJ = 1 mol Fe / \(m_1\)

By cross-multiplying and rearranging the equation, we find:

\(m_1\) = (-850 kJ * 1 mol Fe) / (2 mol Fe)

Now we can substitute the value of m1 into the first equation to find \(m_2\):

\(m_2\) = (725 kJ * [(-850 kJ * 1 mol Fe) / (2 mol Fe)]) / -850 kJ

Simplifying the equation, we get:

\(m_2\) = (725 kJ * 1 mol Fe) / (2 mol Fe)

\(m_2\) = 362.5 kJ / mol Fe

Therefore, the mass of iron formed when 725 kJ of heat is released is 362.5 kJ/mol Fe.

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Answer:

false

Explanation:

false, only a small percentage of mutations cause genetic disorders—most have no impact on health or development. For example, some mutations alter a gene's DNA sequence but do not change the function of the protein made by the gene.

If pressure is held constant, the combined gas law would become \(v_1/t_1 = v_2/t_2\)

If the volume is held constant, the combined gas law would become \(p_1/t_1 = p_2/t_2\)

The combined gas law is a law that relates Boyle's law, Charle's law, and Gay-Lussac's law together in a single equation. The equation is expressed below:

\(p_1v_1/t_1 = p_2v_2/t_2\)

Where \(p_1\) is the initial pressure of gases, \(v_1\) is the initial volume of gases, \(t_1\) is the initial temperature of gases, \(p_2\) is the final pressure, \(v_2\) is the final volume, and \(t_1\) is the final temperature.

If pressure is held constant, it means \(p_1 = p_2\), the equation becomes:

\(v_1/t_1 = v_2/t_2\)

If the volume is held constant, it means \(v_1 = v_2\), the equation becomes"

\(p_1/t_1 = p_2/t_2\)

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The air is cooled by the currents, which causes it to rise and warm when it crosses land. This warming causes the air to hydrate, then afterward precipitates as the air passes deeper inland.

The impacts of grasslands hitting the sea are typically astounding. Namibia and or the Western Sahara constitute the place where the African desert meets north Mediterranean Sea. Moreover, the Sahara extends eastward to the Red Sea. The Atacama Desert and the Pacific Ocean meet strikingly in northern Chile.

Cold ocean currents that move near the shore drive coastal deserts to emerge. The air is stabilised by the chilly winds, which also prevent cloud development. It produces a significant amount of fog. A dense blanket of minute water droplets which are too light to disperse as rain makes up a fog.

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The most likely formula for the compound composed of element x and nitrogen is CX₄

Element X has a ground- state valence electron configuration of ns2np5

It'll partake one electron to complete its quintet. therefore, it'll form one covalent bond. C snippet shares 4 electrons to complete its quintet. Hence, C snippet forms 4 covalent bonds. therefore, one C snippet will combine with 4 X tittles. The formula of the carbon emulsion most likely to be formed is CX4.

An ionic compound is formed when two atoms combine and one atoms transfers electron to the other atom. Ionic bonds are usually formed between metals and nonmetals.

The element M has two valence electrons and has a valency of two while the element X has seven valence electrons and a valency of one. Hence, the formula of the ionic compound that would most likely result from the reaction between ions of M and X is MX₄.

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Answer:

fossil?..................

Nitrogen=21.1999%

Hydrogen=6.1023%

Sulfur=24.2660%

The percent composition of nitrogen, hydrogen, sulfur , oxygen in ammonium sulfate is 21.18%, 6.05%,24.21%,48.43% respectively.

The percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates solute to solvent as,mass of solute/mass of solution ×100.It helps in elemental analysis of a given compound by giving proportions in which they are present.

Percent composition of N= 28/132.14×100=21.18%

Percent composition of H=8/132.14×100=6.05%

Percent composition of S=32/132.14×100=24.21%

Percent composition of O=64/132.14×100=48.43%.

Thus, the percent composition of nitrogen, hydrogen, sulfur , oxygen in ammonium sulfate is 21.18%, 6.05%,24.21%,48.43% respectively.

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a) Balanced equation:

2Na2CO3 + 2HNO3 -> 2NaNO3 + H2O + CO2

b) Pathway:

To determine the mass of Na2CO3 required to react with 150 mL of 0.15 M HNO3, we need to follow these steps:

Write the balanced equation to determine the stoichiometry between Na2CO3 and HNO3.

Convert the volume of HNO3 to moles using its molarity.

Use the stoichiometry from the balanced equation to determine the moles of Na2CO3 required.

Convert the moles of Na2CO3 to grams using its molar mass.

c) Calculation:

Given:

Volume of HNO3 = 150 mL = 0.150 L

Molarity of HNO3 = 0.15 M

Step 1: Balanced equation:

2Na2CO3 + 2HNO3 -> 2NaNO3 + H2O + CO2

Step 2: Convert volume of HNO3 to moles:

Moles of HNO3 = Volume (L) × Molarity

= 0.150 L × 0.15 M

= 0.0225 moles of HNO3

Step 3: Use stoichiometry to find moles of Na2CO3:

From the balanced equation, we can see that 2 moles of Na2CO3 react with 2 moles of HNO3.

Therefore, the moles of Na2CO3 required = 0.0225 moles of HNO3

Step 4: Convert moles of Na2CO3 to grams:

Molar mass of Na2CO3 = (2 × atomic mass of Na) + atomic mass of C + (3 × atomic mass of O)

= (2 × 22.99 g/mol) + 12.01 g/mol + (3 × 16.00 g/mol)

= 105.99 g/mol

Mass of Na2CO3 = Moles × Molar mass

= 0.0225 moles × 105.99 g/mol

= 2.384 g

d) Calculation:

The mass of Na2CO3 required to completely react with 150 mL of 0.15 M HNO3 is 2.384 grams.

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The molarity (m) of the hcl solution is 0.0095428571.We divide the total number of moles of solute by the sum of the solution's liters to determine the molarity of the solution.

Explanation:

0.1002/10.5 = 0.0095428571.

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Yes, Alchemy contributed to the development of chemistry through building an understanding of chemical processes.

The contributions of Alchemy to chemistry was mainly through building of an understanding of chemical properties.

This was brought into play through many chemical processes such as follows:

Therefore Alchemy contributed to the development of chemistry in various ways as mentioned above.

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Gas pressure can be described as the force exerted per unit area by gas molecules as they collide with the surface of a container. It is a measure of the average kinetic energy of the gas molecules.

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Answer:

C2H4O2

Explanation:

In this molecule two carbon molecule , four hydrogen molecules and two oxygen molecules are present . So C₂H₄O₂ is the correct molecular formula of this structure. Option B is correct.

The molecular formula defines the number of atoms of each element in one molecule of a compound. It shows the actual number of each atom in a molecule.

An empirical formula represents the simplest whole-number ratio of various atoms present in a compound. The molecular formula shows the exact number of different types of atoms present in a molecule of a compound.

In this structure there are 2 carbon molecules, 4 hydrogen molecules and 2 oxygen molecules are present.

Hence , the option B is correct . The molecular formula of this structure is C₂H₄O₂.

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To convert the given units, we can use the conversion factor 1 kcal = 1000 cal and 1 Cal = 1000 J. Using these conversion factors, 567 cal can be converted to 0.567 kcal, and 234 J can be converted to 0.234 Cal.

To convert 567 cal to kcal, we use the conversion factor 1 kcal = 1000 cal. We divide 567 by 1000 to convert cal to kcal:

567 cal ÷ 1000 = 0.567 kcal

Therefore, 567 cal is equal to 0.567 kcal.

To convert 234 J to Cal, we use the conversion factor 1 Cal = 1000 J. We divide 234 by 1000 to convert J to Cal:

234 J ÷ 1000 = 0.234 Cal

Therefore, 234 J is equal to 0.234 Cal.

Regarding the second question, a rock at the edge of a cliff possesses potential energy. Potential energy is the energy an object has due to its position or condition. In this case, the rock has the potential to fall and convert its potential energy into kinetic energy as it moves downward. Kinetic energy, on the other hand, is the energy possessed by an object in motion. Once the rock starts falling, it will gain kinetic energy as it accelerates downward due to the force of gravity.

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#Note, The complete question is :

18. Convert the following. Use DA and show your work for each question.

a. 567 cal to kcal

b. 234 j to Cal

19. Identify each of the following as a potential or kinetic energy.

a. a rock at the edge of a cliff

b. when a rubber band is stretched and waiting to be released.

c. moving a skateboard

20. How much heat is gained by nickel when 54.2 g of nickel is warmed from 22.4 to 58.4°C? The specific heat of nickel is 0.444 J/(g • °C). You must show your work for credit. Use DA, SF, & write the units.

21. What is the final temperature of water if 1.2 kj are applied to 54.2 grams of aluminum if the initial temperature of aluminum was 65 oC? The specific heat of aluminum is 0.89 J/g oC. You must show your work for credit. Use DA, SF, & write the units.

22. Write down the specific heat for the following metals.

Aluminum Iron Gold Silver

If the same amount of heat is added to 5.0 g of each of the metals, which are all at the same temperature, which metal will have the highest temperature? Explain without any calculations.

There are several methods for producing nitric acid from nitrogen, but two common methods are:

1. Ostwald process:

4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)

2 NO(g) + O2(g) → 2 NO2(g)

3 NO2(g) + H2O(l) → HNO3(aq) + HNO2(aq)

Overall equation:

4 NH3(g) + 3 O2(g) + H2O(l) → 2 HNO3(aq) + 2 NO(g)

2. Birkeland-Eyde process:

N2(g) + 3 H2(g) → 2 NH3(g)

2 NH3(g) + 3 O2(g) → 2 NO(g) + 3 H2O(g)

2 NO(g) + O2(g) → 2 NO2(g)

3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g)

Overall equation:

N2(g) + 3 O2(g) + 3 H2(g) → 2 HNO3(aq)

Approximately 20.0 mL of 0.5 M NaOH will be used to completely neutralize 3.0 g of acetic acid (HC2H3O2) in the vinegar sample.

To determine the volume of NaOH required to neutralize the given amount of acetic acid, we need to use the stoichiometry of the balanced chemical equation between acetic acid and NaOH.

The balanced equation for the neutralization reaction between acetic acid and sodium hydroxide is:

HC2H3O2 + NaOH → NaC2H3O2 + H2O

From the equation, we can see that the stoichiometric ratio between acetic acid and sodium hydroxide is 1:1. This means that 1 mole of acetic acid reacts with 1 mole of NaOH.

First, we need to calculate the moles of acetic acid using its molar mass:

Molar mass of HC2H3O2 = 60.05 g/mol

Moles of HC2H3O2 = 3.0 g / 60.05 g/mol ≈ 0.04997 mol

Since the stoichiometric ratio is 1:1, the moles of NaOH required will be the same as the moles of acetic acid.

Now, we can calculate the volume of 0.5 M NaOH needed using the formula for molarity:

Molarity = Moles of solute / Volume of solution (in liters)

0.5 M = 0.04997 mol / Volume (in liters)

Rearranging the equation to solve for volume, we have:

Volume (in liters) = 0.04997 mol / 0.5 M = 0.09994 L

Since 1 L is equal to 1000 mL, we can convert the volume to milliliters:

Volume (in mL) = 0.09994 L * 1000 mL/L ≈ 99.94 mL

Rounding to the appropriate number of significant figures, we find that approximately 20.0 mL of 0.5 M NaOH will be used to completely neutralize 3.0 g of acetic acid in the vinegar sample.

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