1: Copper has an atomic number of 29

2 answers:

7 0

1) In 4 Copper atoms you will end up having 116 electrons.

2) You can make 3 Copper atoms out of 87 protons.

kap26 [50]3 years ago

3 0

1.) In 4 Copper atoms, you will have 116 electrons.

2.) You can make 3 Copper atoms out of 87 protons.

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What is the boiling point of water when the external pressure is 187.5 mmhg?

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4 years ago

How would decreasing the volume of the reaction vessel affect each of the following equilibria? 2NOBr(g) --> 2NO(g)+Br2(g)

Alex_Xolod [135]

As per Le Chatelier principle, when a system in equilibrium is disturbed, the reaction will try to compensate the change to restore the equilibrium.

This reaction occurs in gas phase, so the volume is inversely proportional to the pressure.

Then a decrease in volume will cause an increase in pressure, so the system will tend to react in the direction that compensates this increase, this is the system will try to reduce the number of moles of particles to reduce the increase of the pressure.

As you see, there are 3 particles of products (2 of NO and 1 of Br) for every 2 particles of reactant (NOBr).

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3 years ago

I need an answer now please asap and you will me marked brainiest please it's missing I need it now.

kogti [31]

Answer:

Molecular Mass:

1. 40g per mole

2. 19g per mole

3. 64g per mole

4. 32 g per mole

5. 17g per mole

6. 59.5g per mole

7.58.5 g per mole

8.220g per mole

9. 78g per mole

10. 200g per mole

Explanation:

Molecular Mass = Number of atom x atomic mass of an element

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3 years ago

During dialysis, water and urea pass from the blood into the dialysis fluid. Proteins stay in the blood.

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Answer:

Healthy kidneys clean your blood and remove extra fluid in the form of urine. They also make substances that keep your body healthy. Dialysis replaces some of these functions when your kidneys no longer work. There are two different types of dialysis - hemodialysis and peritoneal dialysis. The following is about hemodialysis.

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A chemist reacted 17.25 grams of sodium metal with an excess amount of chlorine gas. The chemical reaction that occurred is show

Afina-wow [57]

Answer: The actual yield of the product is 38.57 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(1)