Recent questions in Chemistry

Question

Calculate the root mean square (rms) average speed of the atoms in a sample of neon gas at 0.12 atm and -48 degrees celsius. Round your answer to 3 significant digits.

Philip Holly asked Oct 8, 2024

by Philip Holly

8.2k points

1 answer

0 votes

138k views

Which of the following is a scientific question? A. What is the best price for an LED screen design? B. Does the LED screen design violate a previous patent? C. Which LED screen design is the most energy

Meredith Murfin asked Oct 8, 2024

by Meredith Murfin

8.4k points

2 answers

5 votes

127k views

Complete the sentence: 100 hydrogen stations already in operation in ______. A) Europe B) North America C) Asia D) Antarctica

Tom Granot asked Oct 8, 2024

by Tom Granot

8.4k points

1 answer

1 vote

128k views

Why is it possible to determine he molar ratio of water to salt?

Chioma asked Oct 8, 2024

by Chioma

7.4k points

1 answer

3 votes

119k views

An empty steel container is filled with 3.4 atm of H₂ and 1.0 atm of F₂. The system is allowed to reach equilibrium according to the reaction below. If Kp = 0.45 for this reaction, what is the equilibrium

Martin Velchevski asked Oct 8, 2024

by Martin Velchevski

7.4k points

1 answer

2 votes

10.8k views

A system containing a flammable refrigerant must have the process tubes marked with a ________ color. a) red b) green c) blue d) yellow

Silver Quettier asked Oct 8, 2024

by Silver Quettier

8.7k points

1 answer

2 votes

9.1k views

Which two elements are nonmetals and gases at room temperature and normal atmospheric pressure?

Aleksandr Ivanov asked Oct 8, 2024

by Aleksandr Ivanov

8.1k points

1 answer

0 votes

101k views

in general, what are we looking for in oil analysis results as well as other methods of condition monitoring?

Michalsrb asked Oct 8, 2024

by Michalsrb

8.0k points

1 answer

0 votes

192k views

Which type of fire can be put out with water? A.Grease B.Electrical C.Paper D.Chemical

TheCyberliem asked Oct 8, 2024

by TheCyberliem

8.1k points

1 answer

2 votes

123k views

A mixture of air and benzene is found to have a relative saturation of 50% at a temperature of 27 °C and an absolute pressure of 110 kPa. What is the mole fraction of benzene in air?

DaoWen asked Oct 8, 2024

by DaoWen

8.5k points

2 answers

5 votes

198k views

Two types of spiral galaxies exist. A normal spiral galaxy is one kind. Which phrase best describes the second type of spiral galaxy?

Dag Hjermann asked Oct 8, 2024

by Dag Hjermann

8.0k points

1 answer

4 votes

92.0k views

What is the pressure of a 0.200 mol-sample of a he gas that has a volume of 4.15 l at 345 k?

Nithin Varghese asked Oct 8, 2024

by Nithin Varghese

8.6k points

1 answer

1 vote

202k views

What quantity of NaG3 was required to reach the equivalence point in the titration? A) Not provided in the information B) 25 mL C) Depends on the concentration of the NaG3 solution D) 50 mL

Andelas asked Oct 8, 2024

by Andelas

8.1k points

1 answer

2 votes

45.7k views

Apple sells for 43 cents a pound. how much does 3.2 pounds of apples cost

Manoj asked Oct 8, 2024

by Manoj

7.4k points

1 answer

1 vote

27.0k views

Hydrogen reacts with oxygen to produce water. If 2.0 moles of hydrogen gas react with excess oxygen gas, how many grams of water will be produced? 2 H₂ + O2₂--> 2 H₂O H- 1.01 0- 15.999

Aspartame asked Oct 8, 2024

by Aspartame

7.3k points

1 answer

0 votes

143k views

The pH of a solution of CH₃NH₂ is 8.45 at 25 °C. What is the hydroxide ion concentration in this solution?

Amraby asked Oct 8, 2024

by Amraby

7.5k points

1 answer

1 vote

216k views

Why does the conversion of hydrogen to helium only occur at very high temperatures? a. Conversion actually occurs at all temperatures. b. Short wavelength photons are needed for the conversion. c. Hydrogen

Somnath asked Oct 8, 2024

by Somnath

7.4k points

1 answer

2 votes

29.4k views

What is not associated with the first "clinical trial" on the effects of certain chemicals on human health? -Harvey Wiley -Poison squad -Pure Food and Drug Act of 1906 -Meat preservatives -Sulfanilamide

Chsh asked Oct 8, 2024

by Chsh

7.9k points

1 answer

0 votes

71.9k views

How many atoms of a Group 17 element would be needed to react with one atom of a Group 2 element to form a neutral bond? Explain.

Kaspars asked Oct 8, 2024

by Kaspars

8.2k points

1 answer

1 vote

169k views

Recognizing and honoring cultural boundaries and finding effective ways to cross them is a life-long journey. A) True B) False

Gce asked Oct 8, 2024

by Gce

8.1k points

1 answer

5 votes

2.0k views

Page:

« prev
1
...
890
891
892
893
894
895
896
...
1000
...
next »

Ask a Question

Recent questions in Chemistry

Other Questions