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tatuchka [14]
2 years ago
5

Single-use earplugs require a professlonal fitting before they can be used.

Chemistry
2 answers:
Morgarella [4.7K]2 years ago
3 0
The answer is B) False
Marysya12 [62]2 years ago
3 0

Answer:

The answer is false

Explanation:

Because i am taking this safety test and i got that question right ong

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A solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water. The molar mass of Cu is 63.55 g/mol the molar mass of S
slamgirl [31]

The molarity of a solution that contains 35.00 g of CuSO4 dissolved in 250.0 mL of water is 0.88M.

<h3>How to calculate molarity?</h3>

The molarity of a solution can be calculated using the following formula:

Molarity = no of moles/volume

According to this question, a solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water.

no.of moles of CuSO4 = 35g ÷ 159.6g/mol

no. of moles of CuSO4 = 0.22 moles

Therefore; molarity of CuSO4 solution is calculated as follows:

M = 0.22 ÷ 0.25

M = 0.88M

Therefore, the molarity of a solution that contains 35.00 g of CuSO4 dissolved in 250.0 mL of water is 0.88M.

Learn more about molarity at: brainly.com/question/12127540

6 0
2 years ago
Which statement offers an explanation for why some parts of John Dalton's atomic theory were proven to be false?
Alchen [17]

Answer:d

Explanation:

6 0
3 years ago
Determine whether the disruption of the bonds or attractions occurs during protein hydrolysis or protein denaturation.
Aleonysh [2.5K]

Answer:

The disruption of the bonds or attractions occurs during protein hydrolysis which results in the loss for the primacy structure. The peptide bonds is the bond affected in this scenario.

The disruption of the bonds however only exist in the process of denaturation and this results in a change in the confirmation which could be secondary, tertiary, and quaternary structural related. And example of the bonds affected include salt bridges, disulfide bridges, hydrogen bonds etc.

5 0
3 years ago
Consider the temperature versus time graph below. I which region is the substance in both the solid phase and the liquid phase?
SVEN [57.7K]

Answer:

2

Explanation:

The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

The rect number 4 correspond to a liquid-gas phase

8 0
3 years ago
Read 2 more answers
Which notation represents atoms that have the same number of protons but a different neutron?
ArbitrLikvidat [17]
Those are called isotopes,

the answer is 3.

each element has its own unique number of protons (atomic number) but a different number of neutrons can be shown in example number 3.
5 0
3 years ago
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