N2 + 3H2  → 2NH3 How many moles of hydrogen, H2, are needed to react with 2.0 moles of nitrogen, N2?

Q: Balance the following equations, and indicate whether they are combination, decomposition, or…

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Q: Ethylene glycol (p = 1123 kg/m³) is mixed with water to create antifreeze. Determine the volume…

A: It is a ratio between the density of a mixture or substance to that of water, which is 1000 kg /m^3.…

Q: Do covalent compounds conduct electricity when they are mixed with water?  Explain.

A: The covalent bond is the type of the bond formed by the sharing pair of electrons between toe or…

Q: two blocks of ice when placed together, combine to form a single piece. explain how this happens?

A: The melting point of ice:

Q: Determine the following products using the correct sign: 1.11. 1.2J.=.. 1.3 jxk=.. 1.4-4xk

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Q: Try It! 1. Kevin wants to have his tea party so he want to know the of solution made by dissolving…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: Why did the egg rise when the salt was added tot he system ?

A: The density of a material decides whether it will sink or float.   material which is denser or…

Q: TRUE OR FALSE SURFACE TENSION: I. A decrease is due to the weakening of the hydrogen bonds of…

A: Surface Tension

Q: 9. Determine the components of reaction at A and B. 600 N 800 N-m B 1.5 m 1.5 m 2 m 2 m- 45 D

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Q: 3. Which of the following elements is a liquid at room temperature? а. N С. Br b. В d. Si O A O B O…

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Q: 47. | The distance between the molecules The repulsive force between two molecules B D Figure 10

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Q: Determine the mass in grams of 1.1 moles of NaCl

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Q: 2. Substances have a definite and unchanging chemical composition. Examples of substances are salt,…

A: Option C is correct  Their composition is balance wherever you find them

Q: How much heat is needed to cause the following irreversible reaction?     250 g of liquid H2O at…

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Q: Consider the following reactions: Which are endothermic * H,(g) + I,(g) → 2 HI(g) + 3.0 kcal N2 (g)…

A: We need to tell which of these reactions are endothermic.

Q: The active ingredient in the allergy medication Claritin contains carbon (C), hydrogen (H), chlorine…

A: Given: The allergy medication of Claritin C22H23Cl N2O2 contains 1.424 x 1019 molecules

Q: Consider the following reaction at equilibrium. What effect will decreasing the volume of the…

A: Given data: Chemical reaction: 2H2Sg+3O2g⇌2H2Og+2SO2g

Q: Solve the given problem. How many atoms are in a 3.0 g sample of sodium (Na)?

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Q: Find the percentage by mass of oxygen (O) in Al2O3 if it is 52.9% aluminum (Al) by mass. (Round your…

A: please see the next step for solution

Q: What is the mass of 0.6 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37

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Q: Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas to form chromium(III) sulfide and water:…

A: Solution:   The Given chemical equation for the Reaction is as follows:   Cr2O3(s) +…

Q: 7.How much Insecto 4 E would be needed to make up 150 gallons of a 2% spray solution?

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Q: QUESTION 8 A first order reaction has an activation energy of 66.2 k/mol and a frequency factor…

A: 8. According to the Arrhenius equation. K=Ae-EaRT Here, K is the rate constant, A is the frequency…

Q: 8. Determine the mass in grams of 1.7 moles of Ca(OH)2

A: Molar mass of Ca =40 g/mole Molar mass of O =16 g/mole Molar mass of H =1 g/mole We have given 1.7…

Q: A (deoxyribonucleic acid) is 2.28 µm long. The ends of the molecule become singly ionized: negative…

A:

Q: Liquid nitrogen is obtained froM liquefied air and is used to prepare frozen goods and in…

A: Given : density of liquid nitrogen at boiling point (d) = 0.808 gcm3Required : density of liquid…

Q: 5. Calculate (to the nearest 0.1 u) the formula mass of these compounds (if your answer is 47 then…

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Q: What is the mass of 0.7 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37

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Q: Why there may be 4 differences observed in the melting point and boiling point of water? Check all…

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Q: #13 Alternative Energy measures Noting that one Mole contains Avogadro's number (6.02 × 1023) of…

A: Given: 1 mole=6.02x1023. Energy, E=1 kcal/mol. We need to calculate this energy into joule.

Q: This is the term for molecules which have a slightly negative or positive side

A: A molecule which has a slightly negative side and slightly positive side is known as a POLAR…

Q: Calculate the number of moles and atoms/molecules from the following:          a. 67.83 grams of H2O…

A: Part A. Molecular mass of H2O  is 18 g/mol. Therefore, 1 g=118 mol Hence, 67.83 g=118×67.8367.83…

Q: What is the mass of 0.75 moles of (NH4)3PO4? O 111.75 g O 121.75 g O 131.75 g O 101.75 g

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Q: What state is Br2 in the following equation? S (s) + Br, (1) → SBr, (g) Solid O Liquid Gas Aqueous

A: The letter in parenthesis after the chemical formulas represents the state of that element or…

Q: 3. Which of the following describes an example of a material undergoing a chemical change to become…

A: To identify an example of material undergoing a chemical change to become another material with…

Q: 3. Calculate the number of atoms in 250 g of silver (Ag) if atomic mass of silver is 107.868 g/mol

A: Given: The weight of the silver is 250 g. The atomic mass of silver is 107.868 g/mol.

Q: inol and S2) are completely miscible liquids forming a homogenous mixture. On mixing the two…

A: (i) A homogenous mixture is one that has uniform composition and properties throughout. A homogenous…