Particles of the substance have the most kinetic energy when the substance is(a)1. A gas. The part of the graph that represents where the substance has the least amount of potential energy is labeled(b)1. Solid.

Gas molecules have the highest average velocities among the three states of matter so gas has the highest kinetic energy. During freezing, a substance loses a lot of potential energy so solid has the least potential energy.

9 0

3 years ago

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A reaction mechanism has the following elementary step as the slow step: B2A What is the rate law for this elementary step? O ra

xenn [34]

Answer:

r = k [ B ]

Explanation:

B → 2A

⇒ r = k [ A ]/2 = k [ B ]

3 0

3 years ago

A silver necklace has a density of 10.5 g/mL and a volume of 1.5 mL. What is the mass of the silver necklace?

melamori03 [73]

Answer:

15.75g

Explanation:

Rearrange the formula: density = mass/volume, so that mass is the subject: mass = density × volume

Now substitute (plug in) the known values into the formula:

mass = 10.5 × 1.5 ⇒ mass = 15.75g

The mass of the silver necklace is 15.75g

Hope this helps!

4 0

2 years ago

Look at the bottom of the periodic table. There are two rows of elements separated from the others. Where do these

mina [271]

Answer:

The first row of elements fits in period 6, after the element lanthanum (La). The second row of elements fits in period 7, after the element actinium (Ac). 

I hope this helps!

4 0

3 years ago