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Nuetrik [128]
3 years ago
6

If a star is 300 light years away from Earth, how long does it take light from that star to reach Earth?

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
8 0

Answer: It would take 300 light years to reach Earth.

Explanation:

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Which of the following are Cations? (Select all that apply)
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Answer:

k(+)

NH4(+)

Al3(+)

Explanation:

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3 years ago
A molecule has three bonded atoms around the central atom. The central atom does not have any lone pairs. What is the geometry o
adelina 88 [10]

Answer:

trigonal planar

Explanation:

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3 years ago
Which best describes the greenhouse effect?
konstantin123 [22]
The correct answer should be B) Water vapor and carbon dioxide in the atmosphere trap heat.

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Why is DNA important?
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3 0
3 years ago
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(d) If you have 9.44 g of NazPO4, how many grams of AgNO, will be needed for complete
AlladinOne [14]

30.6 g of AgNO₃

Explanation:

We have the following chemical reaction:

Na₃PO₄ + 3 AgNO₃ → Ag₃PO₄ +  3 NaNO₃

Now we calculate the number of moles of  Na₃PO₄:

number of moles = mass / molecular weight

number of moles of Na₃PO₄ = 9.44 / 164 = 0.06 moles

Now we formulate the following reasoning:

if        1 mole of Na₃PO₄ will react with 3 moles of AgNO₃

then  0.06 moles of Na₃PO₄ will react with X moles of AgNO₃

X = (0.06 × 3) / 1 = 0.18 moles of AgNO₃

mass = number of moles × molecular weight

mass of AgNO₃ = 0.18 × 170 = 30.6 g

Learn more about:

mole concept

brainly.com/question/1445383

brainly.com/question/10165629

#learnwithBrainly

3 0
3 years ago
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