CHEMISTRY HIGH SCHOOL

The energy carried by light waves is taken in by particles of matter.What type of wave interaction does this statement describe?
A
absorption
В.
reflected
C.
refraction
O D.
scattering

Answers

Answer 1
Answer:

Answer:

B absorption

Explanation:

because absorption is the transfer of energy carried by light waves to particles of matter

Answer 2
Answer: B the wave must be reflected

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Why might calcium be important in the diet of many living
things?

Answers

Answer:

Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health. Humans need calcium to build and maintain strong bones, and 99% of the body’s calcium is in the bones and teeth.

Answer: Helps form bones and shells

Explanation:

What are m and n in the rate law equation? Rate = k[A]^m[B]^n A. They are the coefficients obtained from the equation. B. They are the starting temperatures of the reactants. C. They are the molar masses of the reactants. D. They are experimentally determined exponents.

Answers

The answer is A. The m and n are the coefficients obtained from the equation. And important thing is that the equation need to be balanced before using its coefficients.

I just did it, the correct answer is actually D. They are experimentally determined exponents.

What is the molarity of a solution that contains 612 grams of CaCl2 in 3.04 liters of solution?1.81 M
201 M
5.52 M

Answers

1.       There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

 

Molarity = 612 g (1 mol / 110.96 g) / 3.04 L

Molarity = 1.81 M

1.81 M is the polarity of a solution that contains 612 grams of CaCl2 in 3.04 liters of solution.

if the proper dosage of a drug is 2.0mg/kg of body weight, how many milligrams (mg) of the drug would a 110 lb individual need? (5%)

Answers

110lbs (1 kg / 2.204 lbs) (2.0mg / 1 kg) = 99.818

Number of electrons in the outer ring of bromine

Answers

Simple, 

looking at the periodic table..

1s2,2s2,2p6,3s2,3p6,4s2,3d10,4s5

Thus, there are 5 valence electrons in the outer ring of Bromine.

In a reaction progress curve, each peak of the curve corresponds to _____ of the reaction.

Answers

an activated complex
In a reaction progress curve, each peak of the curve corresponds to the activation energy of the reaction.
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