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ololo11 [35]
3 years ago
15

A student prepares a solution of potassium chloride by dissolving 90.6 g of KCI into

Chemistry
1 answer:
Wittaler [7]3 years ago
8 0

Answer:

B

Explanation:

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You have 500 mL of 5 M HCI already made. You need to dilute the solution to 1 M HCI. How much water will you need to add?
Strike441 [17]

Answer:

a. 2500 ml of water is needed

Explanation:

V1C1=V2C2

(500)(5)=(1)V2

2500/1=V2

2500 = v2

7 0
3 years ago
Which of the following was NOT one of the components of Dalton's Atomic Theory? (1 point) All elements are composed of tiny indi
bezimeni [28]

Answer: Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction.

Explanation:

Dalton's Atomic Theory was proposed in the 20th century by an English Scientist named John Dalton. His theory is postulated as follows:

1) All elements are composed of tiny indivisible particles called atoms.

2) The atoms of any one element are identical to those of any other element. 3) Atoms of different elements can physically mix together or can chemically combine in simple whole-number ratios to form compounds.

However, the final option is NOT one of Dalton's Theory

5 0
3 years ago
What is the pressure of 2.3 moles of carbon dioxide gas stored in a 2 liter container at a temperature of 423 K? Given: a = 3.59
oksian1 [2.3K]
PV=nRT
P= ? atm
V= 2 L
T= 423 K
n= 2.3 moles
R= 0.08205
(P)(2)=(2.3)(0.08205)(423)
P= (79.826445)/(2)
P= 39.9132225 atm
8 0
4 years ago
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3 years ago
Which statement is true regarding the function of a catalyst in a chemical reaction?.
guajiro [1.7K]

Answer:

You didn't give any options/statements, so I'm just going to give you context on what catalysts does. Catalysts decrease the activation energy needed, allowing more particles for successful reactions.

I know my colleague tried doing an experiment by using hydrogen peroxide as a catalyst and seeing how rates of reactions were affected. It ended up with a stain on our chemistry lab and him re-doing his entire lab.

7 0
3 years ago
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