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choli [55]
3 years ago
13

What is the average atomic mass of sodium

Chemistry
1 answer:
Alenkasestr [34]3 years ago
4 0
<span>22.989769 u ± 2 × 10^-8 u</span>
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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
Rhenium (Re) is made up of 37.4% 185Re and 62.6% 187Re. The atomic mass of 185Re is 184.953 amu. The atomic mass of 187Re is 186
Anna007 [38]
To calculate the average mass of the element, we take the summation of the product of the isotope and the percent abundance. We calculate as follows:

Average atomic mass = .374 ( 184.953 amu ) + .626 ( <span>186.958 amu )  = 186.208 amu

Hope this answers the question. Have a nice day.</span>
8 0
3 years ago
Read 2 more answers
Conversion factors are useful in solving problems in which a given measurement must be expressed in
spin [16.1K]

Conversion factors are useful in solving problems in which a given measurement must be expressed in some other units of measure.


Conversion factors
are helpful in solving issues where one unit of measurement needs to be expressed in another. In general, a measurement's numerical value changes when it is multiplied by a conversion factor, while the quantity being measured's real size stays the same.
A conversion factor is a number that is used to multiply or divide one set of units into another. If a conversion is required, it must be done using the correct conversion factor to get an identical value. For instance, 12 inches equals one foot when converting between inches and feet.

To learn more about Conversion factors please visit -brainly.com/question/23510660
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4 0
2 years ago
A blank is scientific knowledge established through direct observation and remains constant. Scientific knowledge can change whe
KIM [24]

The words that complete the blanks are hypothesis and experimentation.

<h3>What is scientific knowledge?</h3>

The process by which scientists obtain information and establish knowledge is;

Observation ---> hypothesis ------> experiments ------> Theory -------> Law.

Thus after the process of observation what we have is merely a scientific hypothesis that needs to pass through the process of rigorous experimentation before it is proven to be true.

Thus the words that complete the blanks are hypothesis and experimentation.

Learn more about scientific knowledge:brainly.com/question/10601194

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4 0
2 years ago
Which of the following are found outside the nucleus?
lora16 [44]
Answer:
electrons
Reason:
neutrons and protons are inside the nucleus
4 0
3 years ago
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