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mamaluj [8]
3 years ago
13

Which of the following is NOT a characteristic of stars? A) Size B) temperature C) texture D) color

Chemistry
1 answer:
Lynna [10]3 years ago
7 0

Answer:

C

Explanation:

Characteristics used to classify stars include color, temperature, size, composition, and brightness.

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226.796 kg is the answer
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3 years ago
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Which part of the electromagnetic spectrum has a higher frequency than ultraviolet light?
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<span>Which part of the electromagnetic spectrum has a higher frequency than ultraviolet light? </span>B. Gamma Rays.

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3 years ago
The compound magnesium phosphate has the chemical formula Mg3(PO4)2. In this compound, phosphorous and oxygen act together as on
Lapatulllka [165]

Answer:

The 2 in the formula means that, there are 2 phosphate anions that forms the salt.

Explanation:

Magnesium phosphate is a ionic salt.

The formula indicates that 3 moles of Mg and 2 moles of anion phosphate are contained in 1 mol of compound.

3Mg²⁺ + 2PO₄⁻³  →  Mg₃(PO₄)₂

The phosphate anion comes from phosphoric acid and it is generated when the acid loses the 3 protons.

H₃PO₄  →  3H⁺  + PO₄⁻³

Phosphate has a negative charge of -3, so when it bond to magnesium, which has a charge of +2, there must be 3 magnesium and 2 phosphate to make a global charge +6 -6 in the ions

6 0
4 years ago
Which of the following is/are true concerning a chemical reaction at equilibrium? 1. The system will be a mixture of reactant an
maks197457 [2]

Answer: Option (e) is the correct answer.

Explanation:

An equilibrium reaction is defined as the reaction where rate of forward reaction will be equal to the rate of backward reaction.

For example, N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g)

So, here amount of reactants that is, nitrogen gas and hydrogen gas  will be constant along with constant amount of formation of product that is, ammonia here.

In an equilibrium reaction there is presence of both reactants and products and hence, both reactants and products constitute the system.

Thus, we can conclude that all the given statements are true.

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3 years ago
At 40°C, how much KNO3 is<br> soluble?
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