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Masteriza [31]
3 years ago
15

IM ON A TIMER! What are the main types of star clusters? Check all that apply.

Chemistry
2 answers:
jekas [21]3 years ago
8 0

There are globular and open star clusters, but there are no binary, eclipsing, or wobbling ones.


mojhsa [17]3 years ago
8 0

Answer:  

globular

open

Explanation:

A star cluster is a small group of stars found in galaxy. There are two types of star clusters:

Open and globular.

An open cluster contains about 100 stars. These are found in disk of galaxy. These are less dense group of stars containing  young one.

A globular cluster is has thousands of stars tightly packed together. These are found in halo of galaxy and contain relatively old stars.

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4. How many grams of hydrogen is produced from 12.5 g of Mg reacting with hydrochloric acid in this
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From the reactions, 1.04 g of H2 and 7.995 g of aluminum phosphate is produced.

<h3>What is stoichiometry?</h3>

The term stoichiometry has to do with the amount of substances that participates in a reaction.

For reaction 1;

Mg + 2HCl → MgCl₂ + H₂

Number of moles of Mg reacted =  12.5 g/24g/mol = 0.52 moles

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For reaction 2;

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2 moles of Li3PO4 produced 2 moles of AIPO4

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