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3 years ago

Whos good at the periodic table cus im not help

Chemistry

2 answers:

just olya [345]3 years ago

6 0

Yep it’s 35.45 aka Chlorine. So C

Nesterboy [21]3 years ago

5 0

The answer should be C. 35

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A chemical formula includes the symbols of the elements in the compound and subscripts that indicate

kramer

The subscripts indicate the number of atoms of the element immediately before it.

7 0

3 years ago

In the laboratory you are asked to make a 0.565 m sodium bromide solution using 315 grams of water. How many grams of sodium bro

Scorpion4ik [409]

Answer : The mass of sodium bromide added should be, 18.3 grams.

Explanation :

Molality : It is defined as the number of moles of solute present in kilograms of solvent.

Formula used :

$Molality=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Mass of solvent}}$

Solute is, NaBr and solvent is, water.

Given:

Molality of NaBr = 0.565 mol/kg

Molar mass of NaBr = 103 g/mole

Mass of water = 315 g

Now put all the given values in the above formula, we get:

$0.565mol/kg=\frac{\text{Mass of NaBr}\times 1000}{103g/mole\times 315g}$

$\text{Mass of NaBr}=18.3g$

Thus, the mass of sodium bromide added should be, 18.3 grams.

6 0

3 years ago

I need help with this anyone?

valkas [14]

Just look it up on goog^le or a chart

5 0

3 years ago

Red light has a wavelength of about 6.5 x 10-7m. Find its frequency. Show all work.

ozzi

For this problem we use the wave equation. It is expressed as the speed (c) is equal to the product of frequency (f) and wavelength (v).

c = v x f

We know the wavelength of the an red light which is 6.5 x 10^-7 m. Now, we solve for the wavelength of the unknown wave to see the relation between the two waves.

2.998 X 10^8 = 5.3 X 10^15 X v
v = 2.998 X 10^8 / (5.3 X 10^15) = 5.657 X 10^-8 m

Therefore, the wavelength of the unknown wave is less than the wavelength of the red light.

3 0

3 years ago

What part of a plant contains the gametes?

Leokris [45]

Answer:

7.C or D not sure

Explanation:

its just a opinion :3

5 0

2 years ago