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Finger [1]
2 years ago
12

1. If the wavelength is changed, what will happen to the absorbance values?

Chemistry
1 answer:
S_A_V [24]2 years ago
3 0

Answer:

The longer the path length, the more molecules there are in the path of the beam of radiation, therefore the absorbance goes up. As you likely know from other experiences, a particular chemical species absorbs some wavelengths of radiation and not others

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?cobalt has a density of 8.90 g. what volume would 17.8 g of Cobalt occupy?
Airida [17]

Answer:

Explanation:

Given parameters:

Density of cobalt = 8.9gcm⁻³

Mass of cobalt = 17.8g

Solution

Density can be defined as the mass per unit volume of a substance:

                      Density = \frac{mass in g}{volume in cm^{3} }

The unknown in the problem is Volume:

                    Volume = \frac{mass}{Density}

                     Volume =   \frac{17.8}{8.9} = 2cm³

5 0
2 years ago
Hydrogen is 99% hydrogen-1; 0.8% hydrogen-2; and 0.2% hydrogen-3. calculate it's average atomic mass
alexandr402 [8]
Average atomic mass is =1.11 u

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4 0
3 years ago
Read 2 more answers
What is an emission spectrum?
SashulF [63]

Answer:

D

Explanation:

The electromagnetic radiation is emitted due to a particle moves from a higher to a lower energy state

8 0
2 years ago
PLEASE HELP ME
ki77a [65]

Answer:

1.15 atm

Explanation:

According to Dalton's law of partial pressures, the total pressure is the sum of all the partial pressures of the gases present in the mixture.

Therefore we have:

Total pressure = partial pressure of carbon monoxide + partial pressure of oxygen + partial pressure of carbon dioxide

We were given the following:

Total pressure = 2.45 atm

Pressure of oxygen = 0.65 atm

Pressure of carbon monoxide = x

Pressure of carbon dioxide = 0.65 atm

Therefore:

2.45 = x + 0.65 + 0.65

2.45 = x + 1.3

x = 2.45 - 1.3

x = 1.15 atm

6 0
3 years ago
MgSO4 x 7H2O:
natka813 [3]

Answer:In regards to writing the formula, we know that magnesium has a charge of 1+ and sulfate, SO4, has a charge of 1-. Sulfate is a polyatomic ion so the charge of the whole thing is (SO4)1-. When you combine them you end up with MgSO4 and the "heptahydrate" is seven water molecules.

Explanation:

5 0
3 years ago
Read 2 more answers
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