3 years ago

What is the molar mass of calcium carbonate? *

Chemistry

2 answers:

barxatty [35]3 years ago

6 0

The best answer for this is A because it answers the question 100% correct

Blizzard [7]3 years ago

6 0

Answer:

Explanation:

Molar mass is 100.0869 on the periodic table.

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Which of the following is a change from a more condensed to a less condensed state of matter?

forsale [732]

Well, which one of the choices is different? Freezing, solidifying, and condensing mean that the substance is getting colder. With melting, heat is being added to the substance meaning it is changing to a less condensed state of matter. The answer is melting.

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4 years ago

Cheng made a chart to categorize resources. Which correctly completes the chart? X: Geothermal energy Y: Nonrenewable X: Wind Y:

madam [21]

<span>X: Geothermal energy
Y: Nonrenewable

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3 years ago

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A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centri

Helga [31]

The answer is 80 m.

Centripetal force (F) is a force that makes body move around a circular curve. The unit of force is N (N = kg * m/s²).
It can be represented as:
$F= \frac{m* v^{2} }{r}$
where:
m - mass
v - velocity
r - radius of the curve

We have:
m = 1,200 kg
V = 20 m/s
F = 6,000 N = 6,000 kg * m/s²

We need radius of the curve:
r = ?

So, if <span> $F= \frac{m* v^{2} }{r}$ , then:
</span> $r= \frac{3* v^{2} }{F}$
⇒ $r = \frac{1200 kg * (20m/s)^{2} }{6000 kg*m/s^{2} }$
⇒ $r= \frac{1200*400*kg*m^{2}*s^{2} }{6000kg*m/s^{2} }$
⇒ $r= \frac{480,000m}{6000}$
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4 years ago

Whats the answer and how you got it please :-)

marta [7]

For the element chlorine to be "happy", it needs 8 valence electrons meaning it needs 8 electrons on its outer shell. So the answer would be chlorine because it has 7 valence electrons in the picture and it needs one more to be considered stable.

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4 years ago

Im Stuck on this question for My Science homework

yarga [219]

Answer:

it's not clear

Explanation:

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3 years ago