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Virty [35]
3 years ago
13

PLEASE HELP ME

Chemistry
2 answers:
Rufina [12.5K]3 years ago
7 0
<h2>Hello im pretty sure it has to be B. or C.</h2><h2>ummmmm Maybe B. tho </h2><h2>Hope this helps!</h2>
amm18123 years ago
6 0
The answer is A, dont put anything else
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viva [34]
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4 years ago
Question 2 (2 points)
poizon [28]

Answer:

m_w=439.2g

Explanation:

Hello!

In this case, since the by-mass percent of a solution is a measure of the mass of the solute over the mass of the solution:

\%m/m=\frac{m_{solute}}{m_{solution}} *100\%

As we know the mass of the solution and the by-mass percent, we can compute the mass of glucose in the 480 g of solution:

m_{solute}=\frac{\%m/m*m_{solution}}{100\%}

Thus, by plugging in the data, we obtain:

m_{solute}=\frac{8.5\%*480g}{100\%}=40.8g

Finally, since the solution is made up of glucose and water, we compute the mass of water as follows:

m_w=m_{sol}-m_{solute}=480g-40.8g\\\\m_w=439.2g

Best regards!

7 0
3 years ago
Would your work in cleaning the beach be considered physical or a chemical change to the environment? Explain your reasoning.
gregori [183]
Physical because it can easily turn back into the original "substance"
6 0
4 years ago
6. Which of the following labels for the picture below is correct? a) Solute + solvent = solution b) Solvent + solute = saturati
SVETLANKA909090 [29]

Answer:

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4 0
3 years ago
the space shuttle releases a space telescope into orbit around the earth . the telescope goes from being stationary to traveling
gavmur [86]

Answer:

a = 68 m/s²

Explanation:

Definition:

The acceleration is rate of change of velocity of an object with respect to time.

Formula:

a = Vf - Vi/t

a = acceleration

Vf = final velocity

Vi = initial velocity

t = time

Units:

The unit of acceleration is m.s⁻².

Given data:

a = Vf - Vi/t

a  = 1700 m/s - 0 m/s / 25 sec

a =   1700 m/s /  25 sec

a = 68 m/s²

5 0
3 years ago
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