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MaRussiya [10]
2 years ago
7

If you had 14.5 moles of gold, how many atoms would you expect to have?

Chemistry
1 answer:
Tju [1.3M]2 years ago
6 0

Answer:

(14.5 mol) x (6.022 x 10^23 atoms/mol) = 8.73 × 10^24 atoms

Explanation:

pls mark brainliest

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A balloon contains 0.140 molmol of gas and has a volume of 2.78 LL . If an additional 0.152 molmol of gas is added to the balloo
levacccp [35]

Answer:

The final volume will be 5.80 L

Explanation:

Step 1: Data given

Number of moles gas = 0.140 moles

Volume of gas = 2.78 L

Number of moles added = 0.152 moles

Step 2: Calculate the final volume

V1/n1 = V2/n2

⇒ with V1 = the initial volume = 2.78 L

⇒ with n1 = the initial number of moles = 0.140 moles

⇒ with  V2 = The new volume = TO BE DETERMINED

⇒ with n2 = the new number of moles = 0.140 + 0.152 = 0.292 moles

2.78/0.140 = V2 /0.292

V2 = 5.80 L

The final volume will be 5.80 L

8 0
3 years ago
Provide two arguments on why you don't notice the land moving beneath you, defend your answer.​
AnnyKZ [126]

Answer:

The reference point is the ground.

Explanation:

•Moves slow that you don't notice hope this helps you :) god loves you :)

5 0
3 years ago
if one person can clean a house in 5 hours and the second person can clean the same house in 4 hours, how long would will it tak
Anettt [7]
1/5 + 1/4 =1/x

4x + 5x = 20

9x = 20 

x = 2.22 hours  Answer
3 0
2 years ago
What is the ph of a 3x10-8M H+ solution
Lelu [443]

Answer:

The pH of the solution is 7, 52

Explanation:

The pH gives us an idea of the acidity or alkalinity of a solution. Is calculated:

pH = -log (H +)

pH= -log ( 3x10-8)= <em>7, 52</em>

4 0
3 years ago
To balance the reaction what coefficients (numbers) are needed: HBr +KOH ---&gt; KBr + H2O
Tom [10]

Answer:

H2Br + 2KOH ----- K2Br + 2H2O

5 0
3 years ago
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