Recent questions in Chemistry

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The value of ΔH° for the reaction below is +128.1 kJ: CH₃OH (l) → CO (g) + 2H₂ (g) How many kJ of heat are consumed when 5.10 g of CO (g) is formed as shown in the equation?

Dems asked Oct 4, 2024

by Dems

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1 answer

5 votes

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Please slove it urgent

Muthu Kumaran asked Oct 4, 2024

by Muthu Kumaran

7.9k points

1 answer

4 votes

108k views

For an enclosed gas with a constant temperature, the pressure of the gas changes from 15 atm to 30 atm. What happens to the volume of the gas?

Gurvan asked Oct 4, 2024

by Gurvan

7.7k points

1 answer

5 votes

92.7k views

Which postulate can be used to prove triangle ABC congruent to triangle EDC? A) Side-Angle-Side (SAS) B) Side-Side-Side (SSS) C) Angle-Angle-Side (AAS) D) Hypotenuse-Leg (HL) You can select the correct

Malik Umar asked Oct 4, 2024

by Malik Umar

8.2k points

1 answer

4 votes

19.2k views

A sulphur atom contains 16 protons and 16 neutrons. Give its atomic number and atomic mass number.

David Gish asked Oct 4, 2024

by David Gish

7.8k points

1 answer

5 votes

140k views

Identify the reaction type: Zn + FeS Fe + ZnS

Jesus Oliva asked Oct 4, 2024

by Jesus Oliva

8.8k points

1 answer

2 votes

175k views

Find the number of moles in 450 grams of copper (Cu)

Deleted asked Oct 4, 2024

by Deleted

8.0k points

1 answer

5 votes

62.4k views

What is the kelvin–planck expression of the second law of thermodynamics?

GetName asked Oct 4, 2024

by GetName

8.1k points

1 answer

2 votes

10.3k views

Which of the following substances would have more kinetic energy? substance A at 80 °C substance B at 343 K a) Substance A b) Substance B

Giangimgs asked Oct 4, 2024

by Giangimgs

8.7k points

1 answer

5 votes

13.8k views

Solve for the value of c. 61° = (C - 3) a. c = 58 b. c = 64 c. c = 62 d. c = 60

PeteyPabPro asked Oct 4, 2024

by PeteyPabPro

8.8k points

2 answers

0 votes

181k views

The oil analysis report lists physical properties such as antifreeze, acids, metal content, and oil additives. Select one: O a. Temperature b. Viscosity O c. Both A and B O d. Neither A nor B condensed

FrankelStein asked Oct 4, 2024

by FrankelStein

8.1k points

1 answer

5 votes

167k views

A chemical reaction is endothermic if it absorbs heat from its surroundings. It is exothermic if it gives off heat to its surroundings. In her chemistry class, Lily is given a salt (ammonium nitrate) and

Joep Weijers asked Oct 4, 2024

by Joep Weijers

8.1k points

1 answer

2 votes

230k views

Excess sodium in the diet causes what in some individuals

Mtveezy asked Oct 4, 2024

by Mtveezy

8.4k points

1 answer

1 vote

231k views

Help me i am trying to pass Question A bird is soaring at a constant height above the ground. Which statement best explains this observation? Responses A:The force of gravity does not apply to objects

Reena Parekh asked Oct 4, 2024

by Reena Parekh

8.8k points

1 answer

5 votes

202k views

How can an oil spill occur?

Depquid asked Oct 4, 2024

by Depquid

7.8k points

1 answer

3 votes

35.7k views

One mole each of SO, and NO, were combined in a one- liter container, and the following reaction was allowed to come to equilibrium. SO₂(g) + NO₂(g) = SO₂(g) + NO(g) The equilibrium concentrations were

Victor Engel asked Oct 4, 2024

by Victor Engel

7.2k points

2 answers

0 votes

230k views

Two bonded atoms have a δen = 1.5. Which of the following descriptions of the bond is(are) correct? a) The dipole moment of the bond is not zero. b) The two bonded atoms are the same. c) The bond is a

Slybloty asked Oct 4, 2024

by Slybloty

8.3k points

1 answer

0 votes

54.7k views

What steps in the eukaryotic transcription cycle are stimulated by phosphorylation of the carboxyl terminal (CTD) of the large subunit of RNA polymerase II and beyond? Check all that apply. promoter escape

Sprotty asked Oct 4, 2024

by Sprotty

9.4k points

1 answer

5 votes

155k views

Write a balanced equation for the reaction between baking soda (NaHCO3) and HCl.

Vitaliy Rayets asked Oct 4, 2024

by Vitaliy Rayets

7.7k points

1 answer

5 votes

222k views

The average speed of a nitrogen molecule at 20oC is 515 m/sec. How many minutes will it take the nitrogen molecule to cover exactly 20 km?

Smarty asked Oct 4, 2024

by Smarty

8.6k points

1 answer

2 votes

213k views

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