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Pavel [41]
2 years ago
12

I need it done asap as fast as possible

Chemistry
1 answer:
Lubov Fominskaja [6]2 years ago
6 0

Answer:

1. B

2. D. the form of a substance changes but not its identity

3. C

4. D

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Part G Wavelength is the distance between the crests (tops) or the troughs (bottoms) of two waves that are next to each other. N
Vlada [557]

Answer: 4.4

Explanation:

Thats what my computer says after i submit answer

3 0
3 years ago
When a pot of water has been boiling vigorously for several minutes, the bubbles that emerge from the liquid water are composed
kumpel [21]
Well, water is composed H2 gas and O2 gas in a 2:1 ratio, and the bubbles that form at the bottom of the pan is just the water changing from a liquid to a gas, and im pretty sure its water vapor that comes out of the pan. I hope that helped??? :)
7 0
3 years ago
How many moles are in a solution that has a molarity of 3.0M and a volume of 1500 ml.
Bad White [126]

Answer:

1.25 Moles

Explanation:

1.25 moles of solute

Explanation:

Molarity is defined as the number of moles of solute per liter of solution.

Molarity = moles of solute / liter of solution

We are given the molarity and volume, both of which have the correct units. All we have to do is rearrange the equation to find the number of moles. You can do this by multiplying both sides of the equation by the volume to cancel it out on the right hand side. Afterwards, you should end up having the volume multiplied by the molarity equaling the number of moles of solute like so:

Moles of solute = Molarity * Volume

2.5M HCl * 0.5 L = 1.25 moles of HCl

I hope this made sense.

3 0
2 years ago
Compare and contrast the molecular activity of solids, liquids, and gases.​
cupoosta [38]

Answer:

The molecules in a solid are close together and they vibrate in place. The molecules in a liquid move quickly and farther apart from eachother. The particles in a gas move freely at high speeds and slide past eachother.

5 0
3 years ago
Explain the importance of the periodic table​
Licemer1 [7]

Answer:

In fact, the periodic table is so accurate that it allows scientists to predict the chemical and physical properties of elements that hadn't yet been discovered. ... "The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties," said Mendeleev.

4 0
2 years ago
Read 2 more answers
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