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Chemistry

Jessie Garner

Which of these 1 M solutions will have the highest pH? (1) NaOH (3) HCl (2) CH3OH (4) NaCl

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Chemistry

Annabella

Does water behave as an acid or a base when it reacts with deprotonated methylamine?

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Chemistry

Zariah

Water is placed outside at 298 K overnight. Which statement best describes what would happen? a) 298 K converts to - 24.9 °C, so the water would freezeb) 298 K converts to 24.9 °C, so the water would remain in its liquid statec) 298 K converts to 24.9 °C, so the water would freeze

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Chemistry

Karla Carlson

Which statement correctly describes the Ka of a weak acid?

The Ka is large, and the equilibrium favors products.

The Ka is large, and the equilibrium favors reactants.

The Ka is small, and the equilibrium favors products.

The Ka is small, and the equilibrium favors reactants.

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Chemistry

Dave

What distance does electromagnetic radiation travel in 33 fs?

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Chemistry

Boo Bug

Values of R, the ideal gas constant, and the ideal gas equation are given below. Use these to solve the problems. PV = nRT A 10.0-L rigid container holds 3.00 mol H2 gas at a pressure of 4.50 atm. What is the temperature of the gas? (Round to the nearest whole number)

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Chemistry

Zaniyah Carey

The bromine test (part d) is often used as an indication of unsaturation (double and triple bonds). Explain why your result for trichloroethylene and toluene were different than for the simple alkene produc

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Chemistry

Karson Henson

What happens during a chemical reaction

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Chemistry

Morse

At 700 K acetaldehyde decomposes in the gas phase to methane and carbon monoxide. The reaction is:

CH3CHO (g) →CH4 (g) + CO (g)

A sample of CH3CHO is heated to 700 K and the pressure is measured as 0.15 atm before any reaction takes place. The kinetics of the reaction are then followed by measurements of total pressure and these data are obtained:

t (s) 0 1000 3000 7000

PTotal (atm) 0.15 0.16 0.18 0.20

Find total pressure after 1.95*10^4s.

Express your answer to two significant figures and include the appropriate units

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Chemistry

Meadows

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L?

0.025 L

0.0025 L

25 L

2.5 L

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Chemistry

Martin Baker

The isomerization of 3-phosphoglycerate (3PG) to 2-phosphoglycerate (2PG) has a ΔG°' = + 4.4 kJ/mol. If [2PG] = 4.0 mM and [3PG] = 22.2 mM, in which direction will the reaction move to reach equilibrium at 37°C?

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Chemistry

Enzo Rollins

What are some facts about the element Rutherfordium

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Chemistry

Mya Patel

Luis set a glass of ice water out side is the sunshine. when he looked at the glass 10 minutes later, the contents had changed. what kind of change happened to the ice water?

A. evaperation

B. conduction

C. chemical change

d. sudden change

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Chemistry

Ty Costa

A substance is considered to have a smaller surface area when ...

A. it is a fine powder

B. it is in large chunks

C. you have a small amount of

the substance

D. you have a large amount of E. the substance

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Chemistry

Haven

Which is the noble gas notation for chlorine?

A-[Ne] 4s2 4p5

B-[Ne] 3s2 3p5

C-[Ne] 3s2 3p3

D-[Ne] 3p2 3p5

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