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expeople1 [14]
3 years ago
10

Suppose you want to do an experiment to hear how three different objects with sound when dropped from the same distance. You dro

p a pebble, a rock, and a grain of sand. What are the variables of your experiment?
Chemistry
1 answer:
Alexus [3.1K]3 years ago
6 0
They will fall at different rates because of air resistance
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The center portion of the atom that contains the protons and neutrons is called the _____? nucleus
Virty [35]
It's called the atomic mass
3 0
3 years ago
A hot object will have ___ kinetic energy
Masja [62]

Answer:

More/ Alot? I think is what you are looking for?

Explanation:

It will definitely have some but I'm not sure on what word you are looking for.

6 0
3 years ago
Balance the reaction for the combustion of pentane: ?C5H12+?O2→?CO2+?H2O Enter the four coefficients in order, separated by comm
Daniel [21]

Answer:

The four coefficients in order, separated by commas are 1, 8, 5, 6

Explanation:

We count the atoms in order to balance this combustion reaction. In combustion reactions, the products are always water and carbon dioxide.

C₅H₁₂  +  ?O₂→  ?CO₂ + ?H₂O

We have 12 hydrogen in right side and we can balance with 6 in the left side. But the number of oxygen is odd. We add 2 in the  right side, so we have 24 H, and in the product side we add a 12.

As we add 2 in the C₅H₁₂, we have 10 C, so we must add 10 to the CO₂ in the product side.

Let's count the oxygens: 20 from the CO₂ + 12 from the water = 32.

We add 16 in the reactant side. Balanced equation is:

2C₅H₁₂  + 16O₂→  10CO₂ + 12H₂O

We also can divide by /2 in order to have the lowest stoichiometry

C₅H₁₂  + 8O₂→  5CO₂ + 6H₂O

6 0
3 years ago
Three players (A, B and C) shoot three arrows at a target
UkoKoshka [18]

Answer:

Player B

Explanation:

I just did it and I got it right :)

6 0
3 years ago
(34.969amu)(0.7577) =<br> (36.966amu)(0.2423) =<br> +
Monica [59]

Answer:

26.4 960 for the first one

8.9569 for the second one

7 0
3 years ago
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