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3 years ago

How would a solution that is labeled “5.0 molar” be similar to one labeled “5.0 molal”?

Chemistry

1 answer:

Talja [164]3 years ago

8 0

Answer:

Explanation:

5.0 M would be measured "moles per liter" and A is the only question which includes the fundamental measurement

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When silver nitrate is added to an aqueous solution of magnesium chloride, a precipitation reaction occurs that produces silver

Aloiza [94]

Answer:

103.62 g of AgCl.

Explanation:

Step 1:

The balanced equation for the reaction. This is given below:

2AgNO3 + MgCl2 —> 2AgCl + Mg(NO3)2

Step 2:

Determination of the mass of MgCl2 that reacted and the mass of AgCl produced from the balanced equation.

This is illustrated below:

Molar mass of MgCl2 = 24 + (2x35.5) = 95 g/mol

Mass of MgCl2 from the balanced equation = 1 x 95 = 95 g

Molar mass of AgCl = 108 + 35.5 = 143.5 g/mol

Mass of AgCl from the balanced equation = 2 x 143.5 = 287 g

Thus, from the balanced equation above,

95 g of MgCl2 reacted to produce 287 g of AgCl.

Step 3:

Determination of the mass of AgCl produced from the reaction of 34.3 g of MgCl2.

The mass of AgCl produced from the reaction can be obtained as follow:

Form the balanced equation above,

95 g of MgCl2 reacted to produce 287 g of AgCl.

Therefore, 34.3 g of MgCl2 will react to produce = (34.3 x 287)/95 = 103.62 g of AgCl.

Therefore, 103.62 g of AgCl were produced from the reaction.

8 0

4 years ago

What process describes the transfer of heat through matter by molecular activity?

DIA [1.3K]

The process that describes the transfer of heat through matter by activity of the molecules would be conduction. This type of heat transfer due to the motion of electrons and ions. within a body. As molecules collide with each energy is transferred and released which cause temperature to rise or drop.

8 0

4 years ago

Read 2 more answers

If we reverse the reaction to read Z + Q → X + Y, the +ΔH would be a -ΔH. Does this indicate that heat is given off or absorbed

grin007 [14]

Answer:

Reactants.

Step-by-step explanation:

The equation for the reverse reaction is

Z + Q ⟶ X + Y; ΔH < 0

A negative ΔH indicates that the energy has been given off.

The products X + Y are at a lower energy level than the reactants Z + Q, and the excess energy has been transferred to the surroundings.

8 0

4 years ago

Read 2 more answers

PLEASE HELP!!!! ALMOST DUE

Marina CMI [18]

Answer:

false

true

false

true

false

true

false

unknown

true

Explanation:

8 0

3 years ago

Which of the following halogens has the largest atomic radius?

pickupchik [31]

Answer:

$\boxed {\boxed {\sf B. \ Iodine }}$

Explanation:

Atomic radius is the measurement from the nucleus to the outer edge of the electron cloud.

As you go down a group (vertically) the atomic radius increases because more electron shells are added. As you go across a period horizontally, the atomic radius decreases.

If we look at the halogens group (17), we see they follow this order from top to bottom:

F - Fluorine

Cl - Chlorine

Br - Bromine

I - Iodine

Since it increases down the group, iodine must have the largest atomic radius.

4 0

3 years ago