Chemistry » Page 73

Chemistry

Dayton Mcbride

Friction is not related to the efficiency of a machine.

True

False

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Chemistry

Kenneth Patterson

Who were the scientist associated with the concept of atomic orbitals?

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Chemistry

Evangeline Daniel

Look at the following hypothetical reaction: A + 4B - C + 3D. Assume that the equation is balanced. Which of the following mole ratios will produce the most product?

a) A/B

b) A/4B

c) 3A/4B

d) 4A/B

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Chemistry

Briana

A gas cylinder contains 2.5 atm of ne, 0.8 atm of co2, and 3.4 atm of ar. what is the total pressure in the cylinder? g

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Chemistry

Quinten Kramer

Silicon-30 contains 14 protons. It also contains?

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Chemistry

Lance Parker

Through what process is heat transferred between a hot pan and vegetables placed in the pan

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Chemistry

Destiney Mcclain

Which acid would produce the salt Al (ClO3) 3?

A.) H

B.) HClO

C.) HCl

D.) HI

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Chemistry

Denzel Woodward

What is the main reason there is more variation between N, P, As, Sb, and Bi?

they are in different periods

there are varying classifications of material

different number of valence electrons

increased number of subshells going down group

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Chemistry

Gisselle Pittman

Jonathan is working in his basement on a science fair project when his little sister closes and locks the door. Jonathan wants to let his parents know that he is stuck down in the basement. He can either yell as loudly as he can, bang on the metal pipes, or bang on the concrete wall. Which should he do if he wants someone to hear him? Explain your answer, and explain why the other options would not be as effective.

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Chemistry

Jalen

A compound consisting of atoms of large atomic mass is more likely to require:

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Chemistry

Todd Weeks

What affects a material's resistance

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Chemistry

Jamari Ortega

2. Describe in detail how to prepare 100.0 milliliters of a 5.0 x 10-5 M NaCl solution starting from a 2.0 x 10-4 M NaCl stock solution. Be mindful of the glassware available in the lab. Explicitly state and describe in detail ALL steps necessary to make the solution, including which pieces of glassware you would need to use. (more than just calculations) !

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Chemistry

Ivan Patterson

About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much freshwater unavailable for human use?

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Chemistry

Mary Duke

In the reaction 2co (g) + o2 (g) â 2co2 (g), what is the ratio of moles of oxygen used to moles of co2 produced? select one:

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Chemistry

Alivia Morse

What is the pH of 0.10 M NaF (aq). The Ka of HF is 6.8 x 10-4

2.08

8.08

5.92

14.92

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