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Alika [10]
4 years ago
13

What is the speed at which molecules or atoms move dependent on temperature and state of matter?

Chemistry
1 answer:
Helga [31]4 years ago
3 0
Kinetic energy is the speed at which molecules or atoms move dependent on the temperature and state of matter
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C1 Progress quiz: Atomic structure 2 - test
myrzilka [38]

Answer:

0.11 nm

Explanation:

1.1 x 10-10 m

The goal is to convert the atomic radius from meters (m) to nanometres (nm). We do this by multiplying the value by 10^9.

This is given as;

1.1 * 10^{-10}  * 10^{9}\\1.1 * 10^{-10 + 9}\\1.1 * 10^{-1}\\0.11

5 0
3 years ago
Explain why hydrogen and oxygen are considered elements whereas water is not considered an element.
Ghella [55]
Elements are the simplest building blocks you can break matter down into using purely chemical methods. They are a pure substance made up from only one type of atom.

When you mix elements together these form compounds. The important difference is that as they are a mixture of more than one type of element, they CAN be broken down into more simple substances using chemical means!

As such Hydrogen or Oxygen cannot be simplified chemically (they are therefore elements), however dihydrogen monoxide (H2O or water) is a mixture of these elements that can be broken down using chemical means and so is a compound.
5 0
4 years ago
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Which of these organisms is considered the most complex?
Genrish500 [490]
B because it had bones and the others don’t
3 0
3 years ago
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What does C12 H22 O11 phSO mean 
ioda
Those are basically molecular formula. Which is Table sugar or cane sugar. Generally called sucrose.
8 0
3 years ago
Calcium hydride reacts with water to form hydrogen gas and calcium hydroxide. How many grams of calcium hydride are needed to ge
4vir4ik [10]

The Equation is CaH2(s)+2H2O(l)-->Ca(OH)2(aq)+2H2(g)

so,

moles of H2 generated = PV / RT

R = 62.363 L Torr K−1 mol−1

number of moles = 814 * 53.5 / 62.363 * 293

= 2.38 moles

looking at the equation these came from 2.38 /2 moles of CaH2 or 1.19 moles

Molar mass of CaH2 is 42.0943 g/mol

so mass of CaH2 = 1.19 X 42.1 = 50.01g

3 0
3 years ago
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