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MakcuM [25]
2 years ago
9

Last science question!! Thank you all for the help!

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

Answer 11 moles of O2 and 10 moles of H2O

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Which of the following would not cause an increase in the pressure of a gaseous system in a container? A The container is made l
ludmilkaskok [199]

Answer:

The container is made larger

Explanation:

5 0
2 years ago
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A 10 gram sample of iron reacts with oxygen to form 18.2 grams of ferric oxide. How many grams of oxygen reacted?
RoseWind [281]

Answer:

\boxed {\boxed {\sf 8.2 \ grams}}

Explanation:

According to the Law of Conservation of Mass, the mass of the products must equal the mass of the reactants.

  • mass products = mass reactants

In this problem, the reaction is:

iron + oxygen = ferric \ oxygen

  • The reactants are iron and oxygen. We know the mass of the iron sample is 10 grams.
  • The product is ferric oxide. The mass of the ferric oxide sample is 18.2 grams.

10 \ g + oxygen=18.2 \ g

We want to find how many grams of oxygen reacted. We have to get the oxygen by itself. 10 is being added to oxygen. The inverse of addition is subtraction. Subtract 10 from both sides of the equation.

10 \ g - 10 \ g+ oxygen = 18.2 \ g - 10 \ g

oxygen= 18.2 \ g - 10 \ g

oxygen= 8.2 \ g \\

<u>8.2 grams of oxygen </u>reacted with 10 grams of iron to form 18.2 grams of ferric oxide.

8 0
2 years ago
3. Given the following equation:
miskamm [114]

Answer:

4.767 grams of KCl are produced from 2.50 g of K and excess Cl2

Explanation:

The balanced equation is

2 K+ Cl2 --->2 KCI

Here the limiting agent is K. Hence, the amount of KCl will be calculated as per the mass of 2.50 gram of K

Mass of one atom/mole of potassium is 39.098 grams

Number of moles is 2.5 grams = \frac{2.5}{39.098} = 0.064

So, 2 moles of K produces 2 moles of KCL

0.064 moles of K will produces 0.064 moles of KCl

Mass of one molecule of KCl is 74.5513 g/mol

Mass of 0.064 moles of KCl is 4.767 grams

4 0
2 years ago
Please comment the correct answer and I'll give you brainliest! Which atom of each pair below has the largest ionization energy?
monitta

Answer:kffffffffffffffffp;j.,,j,j[[;'/n  m

Explanation:

tggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg00000000000

6 0
2 years ago
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Calculate the mass percent of each of the elements in 3-phenylphenol, C12H10O
Arturiano [62]

C = 84.71%

H = 5.88%

O =  9.41%

<h3>Further explanation</h3>

Given

3-phenylphenol, C12H10O

Required

The mass percent

Solution

Ar C = 12 g/mol

Ar H = 1 g/mol

Ar O = 16 g/mol

MW C12H10O = 170 g/mol

The mass percent :

C = (12x12/170) x 100%

C = 84.71%

H = (10x1)/170) x 100%

H = 5.88%

O = (1 x 16)/170 x 100%

O =  9.41%

7 0
2 years ago
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