All categories

3 years ago

Https://vocus.cc/article/604c3decfd89780001077db9

SAT

1 answer:

sergejj [24]3 years ago

6 0

Answer:

uhm

Explanation:

jdjsnskkBamlakehdbnz

You might be interested in

Aydijn spell the real name heres a hint backwards ny

katovenus [111]

Nidyaj backwards ny is the real name

4 0

3 years ago

Read 2 more answers

If 153 =2(z+z), then what is the value of 2n(2z) - 193?<br> A.-113<br> B. -40<br> C.40<br> D.113

Nikolay [14]

Answer:

-40

Explanation:

153 = 2(z+z)n

= 2(2z)n

= 2n(2z)

And therefore,

Substituting 2n(2z) =153

In this equation, 2n(2z) - 193 = 153 - 193 = - 40

5 0

3 years ago

It is known that 45 percent of men snore and 25 percent of women snore. If you put a man and a woman together , what is the prob

Olin [163]

Answer:

0.35

Explanation:

( 0.45*1 + 0.25*1 ) / 2 = 0.35

3 0

3 years ago

A 10 kg ball is traveling at the same speed as a 1 kg ball. Compared to the 10 kg ball, the 1 kg ball has A) the same momentum B

vichka [17]

Answer:

I think it is D

Explanation:

7 0

3 years ago

Read 2 more answers

How many grams of sucrose, c12h22o11, must be added to 500. G of water at 100°c to change the vapor pressure to 752 mm hg?.

denpristay [2]

The mass number of sucrose that must be added to 500 g of water is 100.979 grams

To be able to solve this question, we need to use the number of moles concept and mole fraction concept.

<h3>What is the number of moles?</h3>

The number of moles is related to the mass of the substance divided by the molar mass of the substance.

From the given parameters;

The number of moles of water = mass/molar mass

Mass of water = 500 g
the molar mass of water = 18.02 g/mol

number of moles = 500 g/ 18.02 g/mol

number of moles = 27.75 moles

However,

the standard vapor pressure of the solvent $\mathbf{P^0_{water}}$ = 760 mmHg

the vapor pressure of the solute = 752 mmHg

Using the mole concept:

$\mathbf {X_{C_{12}H_{22}O_{11}} = \dfrac{n_{C_{12}H_{22}O_{11}}}{n_{H_2O}+n_{C_{12}H_{22}O_{11}}} }$

By relative lowering of vapor pressure:

$\mathbf{\dfrac{P^0_{H_2O} - P_{H_2O}}{P^0_{H_2O}} = X_{C_{12}H_{22}O_{11}}}$

$\mathbf{\dfrac{760 -752}{760} = \dfrac{n_{C_{12}H_{22}O_{11}}}{27.75 +n_{C_{12}H_{22}O_{11}}} }}$

$\mathbf{0.01053 = \dfrac{n_{C_{12}H_{22}O_{11}}}{27.75 +n_{C_{12}H_{22}O_{11}}} }}$

$\\ \\ \mathbf{0.01053 (27.75) +0.01053 (n_{C_{12}H_{22}O_{11}} ) = n_{C_{12}H_{22}O_{11}}}$

$\\ \\ \mathbf{0.2922075 =0.98947
 (n_{C_{12}H_{22}O_{11}} )}$

$\\ \\ \mathbf{ (n_{C_{12}H_{22}O_{11}} ) = \dfrac{0.2922075 }{0.98947}}$

$\\ \\ \mathbf{ (n_{C_{12}H_{22}O_{11}} ) =0.295 \ moles}$

The mass of sucrose = number of moles × molar mass

The mass of sucrose = 0.295 moles × 342.3 g/mol

The mass of sucrose = 100.979 grams

Learn more about number of moles here:

brainly.com/question/13314627

8 0

2 years ago