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chubhunter [2.5K]
3 years ago
7

Indigenous rocks form by the cooling and hardening of melted rock.* True False​

Chemistry
1 answer:
salantis [7]3 years ago
3 0

Answer: True

Explanation: They are formed by the cooling and hardening of molten magma

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What is the proper solution to the following equation? Answer with correct significant figures. (23.1 + 5.61 + 1.008) × 7.6134 ×
OleMash [197]

(23.1 + 5.61 + 1.008) × 7.6134 × 8.431  

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The equation is solved in the manner that the term in the bracket is added first then mutiplication is done as according to Bodmas rule, if an equation contains brackets that need to be solved first then other operation that is  division,multiplication, addition and subtraction are performed from left to right .

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How many moles of ammonia (nh3) would be produced if 2.5 moles of nitrogen (n2) reacted with excess hydrogen (h2)?
cluponka [151]
Firstly, a balanced equation has to be written for the production of ammonia (NH₃) from hydrogen gas (H₂) and nitrogen gas (N₂):
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Now, the mole ratio of N₂ : NH₃ is 1 : 2 based on the coefficients of the balanced equation.

If the moles of N₂ = 2.5 moles

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6 0
3 years ago
Which option explains how purple pigments make some flower petals purple?
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Many of the actual chemicals in flower petals that give them their different colors are called anthocyanins. These are water-soluble compounds that belong to a bigger class of chemicals known as flavonoids. Anthocyanins are responsible for creating the colors blue, red, pink, and purple in flowers.

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3 years ago
Three people made the
mojhsa [17]

Answer:

the answer is b hope it helped

Explanation:

8 0
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from the equation 2PbO + C = 2Pb + CO2, detemine which one is reactant is oxidised and which is reduced.​
ss7ja [257]

Answer:

Explanation:

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6 0
3 years ago
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