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2 years ago

PLEASE HELP!!!!! 20 POINTS IF ANSWERED

Chemistry

1 answer:

anastassius [24]2 years ago

4 0

Don't use steel, it scratches the pan and make it rust easier, I think, sorry sorry sorry if I am wrong

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If a piece of rock that has a volume of 0.73 L and a mass of 1524 g, what is the density of the rock in g/mL?

coldgirl [10]

Answer:

do mass divided by volume

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2 years ago

What is the conecntration of Fe3 and the concentration of No3- present in the solution that result when 30.0 ml of 1.75M Fe(No3)

zvonat [6]

Answer:

$[Fe^{+3}]=0.700 M$

$[NO_{3}^{-}]=2.10 M$

Explanation:

Here, a solution of Fe(NO₃)₃ is diluted, as the total volume of the solution has increased. The formula for dilution of the compound is mathematically expressed as:

$C_{1}. V_{1}= C_{2}.V_{2}$

Here, C and V are the concentration and volume respectively. The numbers at the subscript denote the initial and final values. The concentration of Fe(NO₃)₃ is 1.75 M. As ferric nitrate dissociates completely in water, the initial concentration of ferric is also 1.75 M.

Solving for [Fe],

$[Fe^{+3}]=\frac{C_{1}.V_{1}}{V_{2} }$

$[Fe^{+3}]=\frac{(1.75).(30.0)}{45.0+30.0 }$

$[Fe^{+3}]=0.700 M$

For [NO₃⁻],

There are three moles of nitrate is 1 mole of Fe(NO₃)₃. This means that the initial concentration of nitrate ions will be three times the concentration of ferric nitrate i.e., it will be 5.25 M.

$[NO_{3}^{-}]=\frac{C_{1}.V_{1}}{V_{2} }$

$[NO_{3}^{-}]=\frac{(5.25)(30.0)}{30.0+45.0 }$

$[NO_{3}^{-}]=2.10 M$

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2 years ago

What is reactant, atom, product, and molecule

Katena32 [7]

Answer:

reactant : a substance that takes part in and undergoes change during a reaction.

atom: the basic unit of a chemical element.

product: a substance produced during a natural, chemical, or manufacturing process

molecule: a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Explanation:

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2 years ago

Why is maple syrup more diluted than maple sap

Katarina [22]

Because of its habitat. It’s more wet

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2 years ago

How would the addition of protons affect the concentration of CH3COOH? How would the addition of OH– affect the amount of CH3COO

Deffense [45]

Answer:

1) increase concentration

2) decrease the amount

3) decrease the concentration

4) it would increase

Explanation: edge 2021

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2 years ago

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