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DerKrebs [107]
3 years ago
6

Which of the following is a biotic of an ecosystem a rock air grass climate

Chemistry
1 answer:
Zigmanuir [339]3 years ago
7 0
Grass is biotic- living.

please vote my answer brainliest. thanks!
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How many moles of HCl would react with 37.1 mL of 0.138 M Sr(OH)2
Lena [83]

Answer is: 0.102 moles of HCl would react.

Balanced chemical reaction:

2HCl(aq) + Sr(OH)₂ → SrCl₂(aq) + 2H₂O(l).

V(Sr(OH)₂) = 37.1 mL ÷ 1000 mL/L.

V(Sr(OH)₂) = 0.0371 L; volume of the strontium hydroxide solution.

c(Sr(OH)₂) = 0.138 M; molarity of the strontium hydroxide solution.

n(Sr(OH)₂) = c(Sr(OH)₂) · V(Sr(OH)₂).

n(Sr(OH)₂) = 0.0371 L · 0.138 mol/L.

n(Sr(OH)₂) = 0.0051 mol; amount of the strontium hydroxide.

From balanced chemical reaction: n(Sr(OH)₂) : n(HCl) = 1 : 2.

n(HCl) = 2 · n(Sr(OH)₂).

n(HCl) = 2 · 0.0051 mol.

n(HCl) = 0.0102 mol; amount of the hydrochloric acid.

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3 years ago
What are some visible signs of an acid-base reaction?
marta [7]
I think one of the signs is <span>water and  salt are formed 

</span>
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A makes it easier to understand things that are too small too large or to observe directly
shutvik [7]
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Which physical property of matter do these four objects have in common?
aleksandrvk [35]

Answer:

A- Non-magnetic

Explanation:

Brass, rubber, plastic, and glass will not be attracted by a magnet.

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Nitroglycerine decomposes violently according to the chemical equation below. What mass of carbon dioxide gas is produced from t
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Below is an attachment containing the solution.

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