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3 years ago

Chemistry, please help

Chemistry

1 answer:

Luba_88 [7]3 years ago

3 0

Answer:

Name ; Nickel(ii)Hydroxide

Formula;NI3O6

Explanation:

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(6 pt) Match each word from Column A with the correct definition from Column B. Column A Column B 1. element 2. compound 3. reac

Marat540 [252]

1. D
2. C
3. F
4. E
5. A
6. B

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3 years ago

When determining slope, data points do not usually fall within a straight line, so you need to draw a _____ line, with as many p

MAVERICK [17]

When determining slope, data points do not usually fall within a straight line, so you need to draw a TREND line, with as many points above and below the line as possible.

Trend line is also called line of best fit. Trend line refers to a line that is drawn through plotted data points, which best expresses the association between the points; that is, it shows the trend in the plotted points. The line is usually used to visually show the relationship between points, which may not be obvious from the data table

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3 years ago

Read 2 more answers

MARKING BRAINLEIST !!

Murrr4er [49]

Answer:

Option C

Explanation:

The theory is useful as in the usual constitution of the theory the professor stated

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2 years ago

What is the mole fraction of sodium chloride in solution that is 13. 0 y mass sodium chloride and that has a density of 1. 10 g/

lyudmila [28]

Mole fraction is the ratio of the constituent moles to the total constituents. The mole fraction of sodium chloride is 0.0443.

<h3>What is a mole fraction?</h3>

A mole fraction is the proportion of the moles of the component in a total component present.

In 100 gm of solution 13.0 5 means, there is 13.0 gm of sodium chloride present. The mass of water is calculated as,

100 - 13.0 = 87.0 gm

Moles of sodium chloride is calculated as:

$\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{13}{58}\\\\&= 0.224 \;\rm moles\end{aligned}$

Moles of water are calculated as:

$\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{87}{18}\\\\&= 4.83\;\rm moles\end{aligned}$

Now, moles fraction is calculated by dividing moles of sodium chloride by total moles as,

$\begin{aligned} \text{Mole fraction of NaCl} &= \dfrac{0.224}{0.224 + 4.83}\\\\&= 0.0443\end{aligned}$

Therefore, the mole fraction of sodium chloride is 0.0443.

Learn more about mole fraction here:

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2 years ago

I NEED HELP!!

shusha [124]

Answer:

1 B

A,C,A,B

C,A,C,A

C,A,A,B

Explanation:

Easy ive done this brings back memories

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3 years ago