3 years ago

Which of these provides evidence that a chemical reaction occurs?

Chemistry

1 answer:

harkovskaia [24]3 years ago

7 0

Answer:

Color change, Temprature change, Odor change, Effervescence (Bubbles)

Explanation:

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Cloud [144]

Ok I may be young but combine the two reactions to create a compund

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3 years ago

Why is DNA important to every living thing?

attashe74 [19]

Answer: sorry for the late answer, I just took the test today.

It provides instructions for processes of the cells

Explanation:

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Which type of molecule is shown below?

zubka84 [21]

Answer:

$\boxed{\mathrm{Alkene}}$

Explanation:

The hydrocarbon shown has a double bond. Hydrocarbons with double bonds are known as alkenes.

Cyclic alkanes have cyclic structure.

Alkanes only have single bonds.

Alkynes have triple bonds.

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What is the mass of 19.5 moles of carbon dioxide?

Olenka [21]

Explanation:

mass = moles * molar mass

molar mass of carbon dioxide (CO2) = 12+32 = 44

= 19.5* 44 = 858

proof

moles = mass /molar mass

= 858/44 = 19.5 moles

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3 years ago

Use the References to access important values if needed for this question There are 12 eggs in a dozen. If a farmer's chickens p

bekas [8.4K]

Answer:

$3.4\times 10^3 eggs$ are produces are in a month.

Explanation:

Quantity of eggs produced by the chicken in a month = 284 dozens

1 dozen = 12 eggs

Number of eggs in a month:

$284 dozens = 284\times 12 eggs =3,408 eggs\approx 3.4\times 10^3 eegs$

$3.4\times 10^3 eggs$ are produces are in a month.

4 0

3 years ago