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Ugo [173]
3 years ago
15

Which of the following would be a clue that a rock is igneous?

Chemistry
2 answers:
ryzh [129]3 years ago
7 0

Answer:

A

Explanation:

they usually have that Crystal like thing in them... since they are formed from Lava

Sholpan [36]3 years ago
4 0
I think it A hope this helps
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Which tool is used to measure an object's mass
natka813 [3]

Answer:

A scale, or a weight. Both of which are more scientifically referred to as a balance.

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3 years ago
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Which formula is a molecular compound?<br><br> H2O2<br> CaO<br> MgS<br> NaCl
Alborosie

Answer:

H2O2

Explanation:

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It is responsible for the generation of earth’s magnetic field
morpeh [17]

Answer: The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.

Explanation:

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3 years ago
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Claims · Evidence • Reasoning A student
sashaice [31]
As with the properties of a substance, the changes that substances undergo can be classified as either physical or chemical. During physical changes a substance changes its physical appearance, but not its composition. The evaporation of water is a physical change.

(I searched that up but here’s an explanation with my own words that you can use):

Change in matter can be classified as a physical change as well as a chemical change due to the properties of substance. A physical change changes substance within its appearance but not its composition. For an example: The evaporation of water is a physical change.

There you go hopefully that helped
3 0
3 years ago
How many moles of water are there in 1.000 l at stp? assume the density of water is 1000 kg/m3?
EastWind [94]
Assume 1 liter = 1 kilogram of water = 1000 grams of water.

Part A)
MW of hydrogen is 1.008g/mol, and oxygen is 16.00g/mol.

Find the MW of water by
2*(1.008) + (16.00) = 18.016g/mol.

Convert 1000g H2O to moles :

(1000g H2O)*(1mol H2O / 18.016g H2O) = 55.51 mol

Part B)
Using the answer from part A and Avogadro's number:

(55.51mol)*(6.022*10^23) =

3.343*10^25 molecules.
Hope this is helpful
7 0
3 years ago
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