3 years ago

The brightness of a star as seen from Earth is referred to as (.......) brightness. what is the word I can't remember it

Chemistry

1 answer:

m_a_m_a [10]3 years ago

3 0

Answer:

Star's

Explanation:

Stars have their own brightness

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The______ the forces among the particles in a sample of matter, the more rigid the matter will be.

Alexus [3.1K]

Answer:

Stronger!

Explanation:

The <u>stronger</u> the forces among the particles in a sample of matter, the more rigid the matter will be.

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3 years ago

Susan needs to simplify the expression shown below what should be her first step

Digiron [165]

Susan should follow PEMDAS,

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction,

So, the first step should be, to solve the equation in the parentheses.

I hope this helps!

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4 years ago

The reaction of 5.40 g of carbon with excess O2 yields 13.6 g of CO2. What is the percent yield of this reaction?

vazorg [7]

C + O2= CO2
$n = \frac{m}{mw}$
$n = \frac{5.4}{12} \\ n = 0.45 \: mol \: of \: carbon$
$n = \frac{13.6}{12 + 16 \times 2} \\ n = \frac{13.6}{44} \\ n = 0.31 \: mol \: of \: carbon \: dioxide$
CO2 is limit
5.4-3.72= 1.68 g of C is excess
5.4 g = 100%
3.72 g = x
x=68.9 %

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3 years ago

2. Perception:

sineoko [7]

Answer:

Explanation:

Someone's perception can be all of these things. the way one person sees something is different than the way someone standing right beside them sees it.

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3 years ago

How many kJ are 3,340J?

forsale [732]

The answer I believe is 3.340kj.

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3 years ago