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3 years ago

Physical properties can be divided into two categories. _ depend on the amount of matter present, while _ don't.

1 answer:

4 0

Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance's chemical identity.

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. Which substance corrodes steel wool the most? A. salt B. acid C. base D. tap water

malfutka [58]

Answer:

A. Salt, hope its helped

5 0

3 years ago

To make a 0.500 M solution, one could take 0.500 moles of solute and add Group of answer choices enough solvent to make 1.00 kg

Fiesta28 [93]

Answer: The correct option is enough solvent to make 1.00 L of solution

Explanation:

A solution consists of solute and solvent. A solute is defined as the component present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

$Molarity=\frac{Moles}{Volume}$ .......(1)

We are given:

Molarity of solution = 0.500 M

Moles of solute = 0.500 moles

Putting values in equation 1, we get:

$0.500mol/L=\frac{0.500mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.500mol}{0.500mol/L}=1.00L$

Hence, the correct option is enough solvent to make 1.00 L of solution

5 0

3 years ago

The specific heat of nickel is 0.44 J/g*⁰C. How much energy needed to change the temperature of 95.4g of nickel from 22⁰C to 32⁰

valentinak56 [21]

To determine the heat or energy needed for the process, we use the equation,
H = mcpdT
where m is the mass, cp is the specific heat and dT is the temperature difference.
H = (95.4g)(0.44 J/g°C)(32°C - 22°C)
= 419.76 J
Thus, the amount of heat that should be ABSORBED is approximately 419.76 J.

8 0

3 years ago

Read 2 more answers

What do the digestive and excretory systems have in common?

coldgirl [10]

Answer:

get rid of waste material

7 0

3 years ago

the pressure on 2.50L of N20 changes from 105 kPa to 40.5 kPa. if the temperature does not change, what will the new volume be.

tresset_1 [31]

Answer:

6.48L

Explanation:

Given parameters:

V₁ = 2.5L

P₁ = 105 kPa

P₂ = 40.5 kPa

Condition: constant temperature

Unknown:

V₂ = ?

Solution:

To solve this problem, we are considering pressure and volume relationship. This should be solved by applying the knowledge of Boyle's law.

The law states that "The volume of fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".

Mathematically;

P₁V₁ = P₂V₂

where P and V are pressure and volume, 1 and 2 represents initial and final states.

Substitute to find the V₂;

105 x 2.5 = 40.5 x V₂

Solving for V₂ gives 6.48L

6 0

3 years ago

Physical properties can be divided into two categories. _______ depend on the amount of matter present, while _______ don't.

Physical properties can be divided into two categories. _ depend on the amount of matter present, while _ don't.