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3 years ago

Plz answer asap thanks

Chemistry

2 answers:

sergiy2304 [10]3 years ago

7 0

Not chemistry but

vowels are A,E,I,O,U

there are 6 possible letter tiles, and only 3 possible vowels in the 6 (A,I,O)

so the chances of drawing a vowel is 3 out of a possible 6
or
3/6 = 0.5

vlada-n [284]3 years ago

3 0

LETTERS= O,P,L,I,S,A
WHICH LETTER ARE VOWELS- BOLDED
O,P,L,I,S,A
therefore the answer is 3
hope this helped:)

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2 years ago

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3 years ago

Freon, a very useful refrigerant, is produced in the following reaction:

Svetach [21]

Answer:

The chemistry will need 2*10⁶ moles of antimony trifluoride.

Explanation:

The balanced reaction is:

3 CCl₄ (g) + 2 SbF₃ (s) → 3 CCl₂F₂(g) + 2 SbCl₃ (s)

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

CCl₄: 3 moles
SbF₃: 2 moles
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SbCl₃: 2 moles

You can apply the following rule of three: if by reaction stoichiometry 3 moles of freon are produced by 2 moles of antimony trifluoride, 3*10⁶ moles of Freon are produced from how many moles of antimony trifluoride?

$moles of antimony trifluoride=\frac{3*10^{6} moles of freon*2 moles of antimony trifluoride}{3 moles of freon}$

moles of antimony trifluoride= 2*10⁶

The chemistry will need 2*10⁶ moles of antimony trifluoride.

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3 years ago

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ikadub [295]

Answer:

3:2, B

Explanation:

The mole ratio is simply the coefficients in a balanced chemical reaction and their relation to each other.

One simple way to easily know b is the correct answer is to look at the units for the answer choices. A is a ratio of Fe to Fe, C is a ratio of Mg to Fe, and d is a ratio of Mg to Fe. That alone must mean B is the correct answer.

We can also use the definition of a mole ratio, as stated above. Given that this equation is balanced, the mole ratio is simply the ratio of the coefficients, and is thus 3:2.

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2 years ago

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olga_2 [115]

Answer:

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Explanation:

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2 years ago

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