6.7 g of LiNO3 from a 20 %(m/m) LiNO3 solution.

Answers

Answer 1

Answer: 20%(m/m)

20 g LiNO₃------------- 100 g solution
6.7 g LiNO₃ ------------ ?

m = 6.7 * 100 / 20

m = 670 / 20

m = 33.5 g

hope this helps!

Related Questions

Which statement describes a step in the formation of an ionic bond?An attraction occurs between two ions that have the same charge. A metal atom forms a cation, and a nonmetal atom forms an anion. A more electronegative atom transfers electrons to a less electronegative atom. A metal pulls electrons from another metal and produces a force of attraction.
What is the symbol for iron? a. I b. F c. Ir d. Fe
If you were asked to convert 25 kg to the unit mg, which of the following would be the first fraction used in the conversion?
How doesthe pressure inside a rigid container change if theabsolute temperature of the gas inside is quadrupled?
A solution is made by completely dissolving 13.7 grams of potassium phosphate in 185.8 mL of water. What is the concentration of potassium in the solution?

Suppose you have two cubes of exactly the same volume. You weigh them and find a mass of 8.91g for one and 8.88g for the other cube even though they are made of the same material. How is this possible? ANSWER FAST

Answers

Explanation:

Mass of the cube -1 = 8.91 g

Mass of the cube-2 = 8.88 g

Volume of the cube-1 = Volume of cube-2 = V

Density of the cube-1 = D

Density of cube-2 = D'

$Density=(Mass)/(Volume)$

$D=(8.91 g)/(V)$

$D'=(8.88 g)/(V)$

$(D)/(D')=((8.91 g)/(V))/((8.88 g)/(V))=1.0033$

$D=1.0033* D'$

Density directly depends upon mass of the substance and inversely depends upon volume of the substance.

Here volume of the both cubes are same but masses are different. So, in this case densities of both cubes can be compared on the basis of masses.

This difference in densities of same material can be due following possibles:

1. May be an impurity present in the one of the cubes for which they have given different values their mass.

2. Weighing may not be working well.

3. May be an air trapped inside in one of the cubes.

The two substances have different densities. Density can be affected by the temperature of a substance. Since they have to same volume but weigh differently, they have different densities. Remember, density = mass/volume

Select the CORRECT pairing. A. pasteurization: low temperatures, long periods of time B. filtration : pore sizes less than 0.45 micrometers C. desiccation : lowering the pH D. cooling: high temperatures, short period of time

Answers

Answer:

filtration: pore sizes less than 0.45 micrometers

Explanation:

What is the molarity of 1.5 liters of an aqueous solution that contains 52 grams of lithium fluoride, LiF, (gram-formula mass = 26 grams/mole)?

Answers

Molarity is simply the number of moles dissolved per liter of solution.
Converting the mass of LiF to moles:
52 g / 26 g/mol = 2 mol LiF

Next, simply divide the number of mole by the volume
2 mol / 1.5 L = 1.3333 mole/L

So, the molarity of the given solution is 1.3333 M

The atomic mass of an element is 32.07 u and its atomic number is 16. The number of protons contained in the nucleus of an atom of this element is (A) 16
(B) 31
(C) 32
(D) 48

Answers

I THINK IT IS 16 BECAUSE THE ATOMIC NUMBER AND THE NUMBER OF PROTONS ARE THE SAME

atomic number = number of electrons = number of protons( by JJ thomson's theory)

Thus, the number of protons is 16

The two factors that affect the magnitude of the force are

Answers

The two factors that affect the magnitude of the force are magnitude of force and distance of line of action of force.

What is force?

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

Learn more about force,here:

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The strength of the gravitational force between two objects depends on two factors, mass and distance.

Complete and balance the following equation: BrO3−(aq)+N2H4(aq)→Br2(l)+N2(g)

Answers

BrO3- + 6H+ + 6e-= Br- + 3 H2O
N2H4 = N2 + 4 H+ + 4e-
2 BrO3- + 3 N2H4 = 2 Br- + 3 N2 + 6 H2O

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