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Firdavs [7]
2 years ago
15

PLEASE HELP I AM FAILING

Chemistry
1 answer:
Gwar [14]2 years ago
5 0

Answer:

160.3 g S

Explanation: there you go

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A chemistry student needs 30.0 g of acetic acid for an experiment. He has available 1.2 kg of a 7.58% w/w solution of acetic aci
Tomtit [17]

Answer:

The mass of solution will be "395.78 g".

Explanation:

Given:

Mass of acetic acid,

= 30 g

Percentage,

= 7.58% w/w

Now,

⇒ % =\frac{Mass \ of \ acetic \ acid}{Mass \ of \ solution}\times 100

By putting the values, we get

⇒ 7.58=\frac{30}{Mass \ of \ solution}\times 100

⇒ Mass \ of \ solution=\frac{30\times 100}{7.58}

⇒                               =\frac{3000}{7.58}

⇒                               =395.78 \ g

8 0
3 years ago
A temperature of 55°F is approximately equivalent to 13°C.
GuDViN [60]

Answer: Yes. That is right. The actual answer, not rounded, would be 12.7778 Degrees Celsius.

7 0
3 years ago
Read 2 more answers
A student has a balloon with a volume of 2.5 liters that contains 4.0 moles of air. The ballon has a small leak, allowing one mo
Over [174]

Answer:

1.9 L

Explanation:

Step 1: Given data

  • Initial number of moles of air (n₁): 4.0 mol
  • Initial volume of the balloon (V₁): 2.5 L
  • Final number of moles of air (n₂): 3.0 mol
  • Final volume of the balloon (V₂): ?

Step 2: Calculate the final volume of the balloon

According to Avogadro's law, the volume of an ideal gas is directly proportional to the number of moles. We can calculate the final volume of the balloon using the following expression.

V₁ / n₁ = V₂ / n₂

V₂ = V₁ × n₂ / n₁

V₂ = 2.5 L × 3.0 mol / 4.0 mol

V₂ = 1.9 L

6 0
2 years ago
Write a short explanation about the “cheater” way to find the # of valence electrons an element has, and explain what valence el
skelet666 [1.2K]
I don’t know what the “cheater” way is, however you can easily judge how many valence electrons an element has by looking at its group number on the periodic table.

Bonding in chemistry is completely and totally due to electrons. Every element wants 8 electrons in its outer shell in order to be stable. This is what we call the “Octet Rule”.
8 0
3 years ago
How many cans of dog food must Sam buy for his 3 dogs if each dog eats 2 cans per day? Sam only shops once a week.
sergey [27]
To find the answer you can set up an equation like this: 3(x)(d) 
x would stand for number of cans each dog eats, while d stands for the number of days in a week. 3(2)(7)=42 Sam would have to purchase 42 cans of dog food each week. 
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