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Lynna [10]
3 years ago
15

How could you use a model to show the cause-and-effect relationship between Earth's rotation and the apparent motion of the star

s across the night sky?
Chemistry
2 answers:
Masteriza [31]3 years ago
7 0

Question:

How could you use a model to show the cause-and-effect relationship between Earth's rotation and the apparent motion of the stars across the night sky?

Answer:

Gravity? or density because of the pull from the sun.

fomenos3 years ago
5 0
Using a model you can rotate the objects seeing it’s rotation if you know that the earth rotates opposite of the sun then you know that the stars move with the sun by a gravitational pull.
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Change the following word equation into balanced formula equation
Natali [406]

Answer:

Fe + CuO ----> FeO+ Cu

Explanation:

A word equation is a chemical equation in which the reactants and products are represented by words rather than the respective symbols of the species involved in the reaction.

Generally, when writing a balanced reaction equation, it is normal to ensure that the number of atoms of each element on the reactant side is the same as the number of atoms of the same element on the product side. This has been ensured in the reaction above.

The reaction above is possible because iron is higher than copper in the electrochemical series hence iron can displace copper from its compounds.

6 0
3 years ago
Where the values come from?
Scrat [10]

Answer:

To find the average atomic mass, you take a certain number of atoms, find the total mass of each isotope, and then divide the total mass of all the atoms by the total number of atoms. Assume that you have, say, 10 000 atoms of carbon

Explanation:

5 0
3 years ago
What is the formula name for Co3N2
Ede4ka [16]

Answer:

Cobaltous Nitride,I think so anyway.......

6 0
3 years ago
How many particles would be found in a 1.224 g sample of K2O
lbvjy [14]

Answer:

9.96*10^21

Explanation:

Molar mass of K2O=29*2+16

= 74g per mol

number of moles in the sample= 1.224/ 74

=0.1654

Number of particles in 1 mole=6.0221409*10^23

Number of particles= 0.01654*6.0221409*10^23

=9.96*10^21

4 0
4 years ago
Read 2 more answers
What would be the pH of a solution of a solution with a hydrogen ion concentration of 0.001 M?
son4ous [18]

0001 M HCl is the same as saying that 1 *10-4 moles of H+ ions have been added to solution. The -log[. 0001] =4, so the pH of the solution =4.

7 0
3 years ago
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