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mariarad [96]
3 years ago
14

How much of salt would you get if you evaporate all water from 20g of a 17% salt solution?

Mathematics
1 answer:
vredina [299]3 years ago
8 0

Answer:

3.4 grams

Step-by-step explanation:

The water 20g has salt solution of 17%.

If you were to evaporate all the water.

17% × 20

0.17 × 20 = 3.4

You would get 3.4 grams of salt.

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20. The total mass of three boxes, A, B, and C, is 1.95 kg. The mass of Box A is 700 g. The mass of Box B is 4 times the mass of
Ksju [112]

Answer:

<h3>Mass of B in Kg = -558.44kg</h3>

Step-by-step explanation:

LET'S DO THIS!

Total mass of A, B and C = 1.95kg

Mass of A = 700 kg

Mass of B = 4x the mass of c (4 x C) which is 4c

Mass of C = ? ( let's call it C )

<h3>Adding all together </h3>

700 + 4c + C = 1.95

<h3>Add like terms</h3>

700 + 5C = 1.95

5C = 1.95 - 700

5C = -698.05

C = -698.05 ÷ 5

<h3>C = -139.61</h3>

<h3>To find B now </h3><h3>Remember they said B is 4 times the mass of C and C = -139.61</h3>

therefore B = 4 × -139.61

<h3>B = -558.44 kg </h3>

<h3>To check if we are correct, we add the masses of A, B and C to see if it equals their total mass which is 1.95kg</h3>

<h3>Using your calculator: </h3>

= 700 + ( -558.44 ) + ( -139.61 )

= 700 - 558.44 -139.61

= 1.95 kg

Which makes us CORRECT ✅.

<h3>Hope this helps.</h3><h3>Good luck ✅.</h3>

5 0
2 years ago
Read 2 more answers
Describe the error in the work shown.
gladu [14]

Your answer is option c. The final simplified form should have y to the 4th power instead of y cubed. I think so..

5 0
3 years ago
If x equals 3, then find the matching value for y.<br> -7x-4y=-5
aliina [53]

-7(3)-4y=-5

-21-4y=-5

-4y = 16

y=-4


7 0
3 years ago
Read 2 more answers
Simplify the radical (180°.
statuscvo [17]

Answer:

radical is sqrt we find 180 sqrt root

Step-by-step explanation:

first we write sqrt 180

sqrt 180 = ?

we can choose first two letters

18 are two letters

4^2 + 2 = 18

so first + third number choose

4 , 2 are number choose

4 + 2 sqrt (4+2-1)

6 sqrt 5

sqrt 180 = 6sqrt 5

6 0
3 years ago
the amount of lemonade at the beginning of the party was 45 quart. At the end of the party there was 8 quarts left. What was his
motikmotik

His percentage of change in the amount of quarts is 82.22%.

Initial amount of lemonade = 45 quart

End amount of lemonade = 8 quart

Change in amount = 45 - 8

                               = 36

Percent = \frac{change in value}{initial value}*100

             = \frac{37}{45}*100

             = 0.8222 * 100

             = 82.22%

Hence, his percentage of change is 82.22%.

To learn more about percentage here:

brainly.com/question/28269290

#SPJ1

8 0
2 years ago
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