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3 years ago

Which unit is not a measurement of volume? cm L ml Cm^3

Chemistry

1 answer:

Mademuasel [1]3 years ago

8 0

Centimeters are units of length.

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Convert 7.8 moles of carbon tetrafluoride into grams.

Vesnalui [34]

Answer:

686.43363984 is the answer when 7.8 moles is converted.

6 0

2 years ago

Making solutions is an extremely important component to real-life chemistry. If you make 3.00 L of a solution using 90.0 g of so

kumpel [21]

Answer:

Final concentration of NaOH = 0.75 M

Explanation:

For $NaOH$ :-

Given mass = 90.0 g

Molar mass of NaOH = 39.997 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{90.0\ g}{39.997\ g/mol}$

$Moles\ of\ NaOH= 2.2502\ mol$

Molarity is defined as the number of moles present in one liter of the solution. It is basically the ratio of the moles of the solute to the liters of the solution.

The expression for the molarity, according to its definition is shown below as:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Where, Volume must be in Liter.

It is denoted by M.

Given, Volume = 3.00 L

So,

$Molarity=\frac{2.2502\ mol}{3.00\ L}=0.75\ M$

Final concentration of NaOH = 0.75 M

5 0

3 years ago

In what order did mendeleev arrange the elements in his periodic table?

irina1246 [14]

He realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.

3 0

2 years ago

If an atom has no electric charge, what can be said about the number of protons and electrons it contains?

vitfil [10]

then the electrons and protons would have a even amount of negetive electric charges

8 0

2 years ago

What is the missing number in the sequence 3,5,9,_,15,23,33

balu736 [363]

Answer:

In every sequence even numbers are added in order.

3, 5, 9, 15, 23, 33