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SVETLANKA909090 [29]
3 years ago
10

How many grams are in 4.39 mol of copper

Chemistry
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer: 278.966

Explanation: You can also approximate the number to 278.97

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It takes Mark two hours to ride his bike 12 miles to his grandma’s house. What is Mark’s speed in miles per hour? I need an answ
lions [1.4K]

Answer:

Mark has a speed of 6 MPS (Miles Per Hour)

Explanation:

It took mark 2 hours to ride his bike to his grandma's house, which was 12 miles away. I divided 2 by 12 and got 6. Remember this: mph = miles away ÷ time.

4 0
2 years ago
Read 2 more answers
Calculate the ph of a 0.005 m solution of potassium oxide k2o
Alecsey [184]
First, we have to see how K2O behaves when it is dissolved in water:

K2O + H20 = 2 KOH

According to reaction K2O has base properties, so it forms a hydroxide in water.
For the reaction next relation follows:

c(KOH) : c(K2O) = 1 : 2

So,

c(KOH)= 2 x c(K2O)= 2 x 0.005 = 0.01 M = c(OH⁻)

Now we can calculate pH:

pOH= -log c(OH⁻) = -log 0.01 = 2

pH= 14-2 = 12




3 0
3 years ago
2.What are variables used to describe weather?
Studentka2010 [4]
The answer is, All of the above
4 0
2 years ago
Which of the following properly describes the movement of atoms as they represent the states of matter? Atoms making liquids hav
7nadin3 [17]

Answer:

Atoms making liquids have less attraction than solids, but more than gases

Explanation:

The attraction between atoms in different molecules in a solid is very strong due to strong intermolecular forces present in a solid. However, such intermolecular forces are weaker in liquids than in solids.

This implies that the solid has higher intermolecular forces of attraction compared to gases and liquids. Based on the negligible degree of intermolecular forces between them, a gas has the weakest intermolecular forces hence the atom has very minimal interaction between them.

7 0
3 years ago
Which is made by weathering?<br><br><br> A. sediments<br> B. minerals<br> C. ash<br> D. magma
rusak2 [61]
The answer is A cause the water breaks down the rocks into small pieces which are called sediments. These things later on turn into rocks with pressure and heat
4 0
3 years ago
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