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professor190 [17]
3 years ago
14

What are the roles of the mucous select two options PLEASE HELP​

Chemistry
1 answer:
Oliga [24]3 years ago
8 0

Answer:

The answer is A and C

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Which of the following is NOT true about one mole?
Lilit [14]
The option in “the mass of 1me of carbon equals the mass of 1 mole of boron atoms” is false since

Mass=molesx molar mass

And the molar masses of these two elements are different so their masses aren’t equal

7 0
3 years ago
A chemist measures the amount of fluorine gas produced during an experiment. He finds that 482. g of fluorine gas is produced.
nata0808 [166]

Answer: 25.37055324733817mol

Approximately 25.371mol

Explanation: Number of moles of a substance is the mass of that substance containing the same amount of fundamental units, for instance atom in 12.0g of 12°C

Therefore:

Number of moles= mass/ molecular mass

Where mass of fluorine given= 482g

Standard Molecular mass of fluorine= 18.9984032g/mol

Substituting value in equation

Mole= 482g/18.9984032g/mol = 25.37055324733817mol

Approximately : 25.371mol

4 0
2 years ago
Ten grams of a gas occupies 12.5 liters at a pressure of 42.0 cm Hg. What is the volume when the pressure has increased to 75.0
Fantom [35]
Based on the question, it is evident that the question is based on Boyle's Law which we will use to find the answer necessary.

Now, Boyle's Equation: P₁V₁ = P₂V₂

     V₂ = P₁V₁  ÷  P₂

∴   V₂  =  (12.5L × 42.0 cm · Hg) ÷ 75 cm · Hg

⇒  V₂  = 7 L
 
Thus, the <span>volume when the pressure has increased to 75.0 cm Hg is 7 Litres.</span>
8 0
3 years ago
The atomic number is very important, as it indicates
ankoles [38]

Answer:

B.) the number of protons and also the number of electrons in an element

5 0
3 years ago
C + H2O → CO + H2 What substance are we expected to solve for?
Bingel [31]
Photosynthesis if not then goggle it lol
3 0
3 years ago
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