3 years ago

30

Chemistry

1 answer:

Rzqust [24]3 years ago

5 0

Im confused cause of how it looks

You might be interested in

How many moles are in 5.025 grams of NaOH?

yKpoI14uk [10]

Answer:

The SI base unit for amount of substance is the mole. 1 grams NaOH is equal to 0.025001806380511 mole.

8 0

3 years ago

Read 2 more answers

Where does the greenhouse effect occur?

attashe74 [19]

Answer:

the greenhouse effect occurs in the earths atmosphere

7 0

3 years ago

Calculate the amount of water (in grams) that must be added to (a) 6.80 g of urea [(NH2)2CO] in the preparation of a 9.95 percen

Lemur [1.5K]

Explanation:

Amount of water required in each case:

(a)The mass% of the solution is:9.95

Mass of solute that is urea is 6.80 g

To determine the mass of solvent water use the formula:

$mass percent=\frac{mass of solute}{mass of solution} x 100\\\\9.95=(6.80g/mass of solution )x100\\mass of solution =(6.80 /9.95)x100\\=68.3 g$

Hence the mass of solvent = mass of solution - the mass of solute

=68.3 g - 6.80g

=61.5 g

Hence, the answer is mass of solvent water required is 61.5 g.

(b) Given mass%=1.70

mass of solute MgBr2 = 29.3 g

The mass of solvent water required can be calculated as shown below:

$mass percent=\frac{mass of solute}{mass of solution} x 100\\\\1.70=(29.3g/mass of solution )x100\\mass of solution =(29.3 g /1.70)x100\\=1720 g$

The mass of the solution is 1720 g.

Mass of solvent water = mass of solution - mass of solute

=1720 g - 29.3 g

=1690.7 g

Answer: The mass of water required is 1690.7 g.

5 0

3 years ago

Which of the following is not a stage in the development of a thunderstorm? developing stage dissipating stage mature stage updr

mars1129 [50]

The answer is: Mature stage

8 0

3 years ago

Sugar cubes are added to a solution of water and lemon juice to make lemonade. The solubility of sugar is 200 g/100 g H2O at the

Aneli [31]

Stirring the solution & crushing the sugar cubes

3 0

4 years ago

Read 2 more answers