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4 years ago

10

Two angles with measures (6x + 60) (90) are supplementary. What is the value of x?

2 answers:

fredd [130]4 years ago

5 0

Supplementary angles add up to 180, so
6x+60+90 = 180 and solve for x
6x= 30
x=5

pishuonlain [190]4 years ago

4 0

Exiting or five because in gem Dos you have to do parentheses first from left to right size 6X +60 is already simplified times 90 now you move your parentheses so you would multiply 16 times 9016×90 whatever that is you would add that to six facts which is not

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33.56 g of fructose (C6H,206) and 18.88 g of water are mixed to obtain a 40.00 ml solution a. What is this solution's density? b

Darina [25.2K]

Explanation:

Mass of fructose = 33.56 g

Mass of water = 18.88 g

Total mass of the solution = Mass of fructose + Mass of water = M

M = 33.56 g + 18.88 g =52.44 g

Volume of the solution = V = 40.00 mL

Density = $\frac{Mass}{Volume}$

a) Density of the solution:

$\frac{M}{V}=\frac{52.44 g}{40.00 mL}=1.311 g/mL$

b) Molar mass of fructose = 180.16 g/mol

Moles of fructose = $n_1=\frac{ 33.56 g}{180.16 g/mol}=0.1863 mol$

Molar mass of water = 18.02 g/mol

Moles of water= $n_2=\frac{ 18.88 g}{18.02 g/mol}=1.0477 mol$

Mole fraction of fructose in this solution: $\chi_1$

$\chi_1=\frac{n_1}{n_1+n_2}=\frac{0.1863 mol}{0.1863 mol+1.0477 mol}$

$\chi_1=0.1510$

Mole fraction of water = $\chi_2=1-\chi_1=0.8490$

c) Average molar mass of of the solution:

= $\chi_1\times 180.16 g/mol+\chi_2\times 18.02 g/mol$

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3 years ago

Can a molecule have polar bonds, but still be a no polar molecule?

My name is Ann [436]

<em><u>A molecule </u></em><em><u>can </u></em><em><u>possess polar bonds and still be nonpolar.</u></em>

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4 years ago

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3. 200 ml of 0.2 M HCl is neutralized with 0.1 M

algol [13]

Answer:

<u><em>a. 0.1 M</em></u>

Explanation:

By definition, <em>half neutralization</em> is the point at which half of the acid has been neutralized.

The neutralization reaction that you are studying is the acid-base reaction:

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