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siniylev [52]
3 years ago
6

RISD-QSA-SCI-CHEM-Units 7-12 Question: 1-1

Chemistry
1 answer:
ra1l [238]3 years ago
8 0

Answer:

0.02.55M

Explanation:

Concentration = moles/ volume(L)

10mL= 0.01L

Concentration (M)= 0.0255 mol / 0.01L

Concentration (M)= 0..255M

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1 pentagram equals how many grams
Fofino [41]

Answer:

5 grams.

Explanation:

Anything that weighs 5 grams, technically, is a pentagram.

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3 years ago
Acid hydrolase, a digestive enzyme,would most likely be found in what organelle
Artemon [7]
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Lysosomes

The function of a lysosome is to rid of any unwanted waste. Acid hydrolase aids in that process. Therefore, the acid would make the most sense to be found in lysosomes.
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3 years ago
Is trimming a bush because it grows too tall a chemical or physical change
professor190 [17]

Answer:

Physical Change

Explanation:

The bush is changing shapes, not changing what it is.

8 0
4 years ago
When C2H6(g) reacts with O2(g) according to the following reaction, 1.43×103 kJ of energy are evolved for each mole of C2H6(g) t
dezoksy [38]

Answer:

-2.86x10³ kJ

Explanation:

The enthalpy of a reaction (ΔH) is defined as the heat produced or consumed by a reaction. In the reaction:

2 C₂H₆(g) + 7 O₂(g) → 4 CO₂(g) + 6 H₂O(g)

The ΔH is the heat envolved in the reaction per 2 moles of C₂H₆. 1.43x10³ kJ are involved when 1 mole reacts. Thus, when 2 moles react, involved heat is:

1.43x10³ kJ ₓ 2 = <em>2.86x10³ kJ</em>. As the reaction is a combustion reaction (Produce CO₂ and H₂O), the heat involved in the reaction is <em>PRODUCED, </em>that means ΔH is negative, <em>-2.86x10³ kJ</em>

8 0
3 years ago
Sjwjdbehdhenwhdbrjxbejsnejfbejdnfbrjrnd
Keith_Richards [23]

Answegood

Explanation:this answer is two it has letters

6 0
3 years ago
Read 2 more answers
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