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Anni [7]
2 years ago
5

1) Which of the following is true about Earth’s plates?

Chemistry
2 answers:
tatyana61 [14]2 years ago
5 0

Answer:

a because the others whould cause earthquakes

Explanation:

Tanzania [10]2 years ago
4 0

Answer:

A

Explanation:

because i think is A (if is not im sorry )

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an atom contains 32 protons and has a mass number of approximately 72 amu what is the chemical symbol for the atom
olga nikolaevna [1]

I belive it would be Hf (hafanium).

5 0
3 years ago
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Gold and helium are examples of a(n)
kogti [31]
I guess examples of solid and gas???? You have to be more descriptive.....
4 0
3 years ago
How many atoms of potassium are in 0.250 mol of potassium carbonate, k2co3?
Verizon [17]
The  number  of  potassium  atom  that  are  in  0.25  moles   potassium  carbonate  is  calculated  as  follows

by  use  of Avogadro  contant

1  mole=  6.02  x10^23   atoms

what  about  0.25 moles,   
by  close  multiplication

{0.250 moles  x 6.02  x10^23}  /  1 mole  =  1.505  x10^23  atoms
4 0
3 years ago
What is required in order to determine wether or not an object moves
Stels [109]

Answer:

The answer would be Point of Reference.

In order to determine, whether an object has moved or not, a point of reference is required. The reference point is required to the measure the movement of the object, without a reference point the distance or displacement cannot be obtained. Hence, a reference point is very required to determine, whether the object has moved or not.

(Hope this helps) Sky

7 0
3 years ago
Calculate the volume in milliliters of a 0.420mol / L barlum chlorate solution that contains 25.0 g of barium chlorate (Ba(ClO 3
Pachacha [2.7K]

<u>Answer:</u> The volume of barium chlorate is 195.65 mL

<u>Explanation:</u>

To calculate the volume of solution, we use the equation used to calculate the molarity of solution:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

Given mass of barium chlorate = 25.0 g

Molar mass of barium chlorate = 304.23 g/mol

Molarity of solution = 0.420 mol/L

Volume of solution = ?

Putting values in above equation, we get:

0.420mol/L=\frac{25.0\times 1000}{304.23\times V}\\\\V=\frac{25.0\times 1000}{304.23\times 0.420}=195.65mL

Hence, the volume of barium chlorate is 195.65 mL

6 0
3 years ago
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