helium gas, 3.0 x 10-4 g dissolved in water, express this concentration in parts per million.

To express the concentration in parts per million (ppm), we need to find the ratio of the mass of helium gas to the total mass, and then multiply by 1,000,000.

Let's assume we have 1 L of water. The mass of water can be calculated as follows:

1 L of water = 1000 g (since 1 L of water weighs approximately 1000 g)

Now, we can find the ratio of the mass of helium gas to the total mass:

(3.0 x 10-4 g) / (1000 g) = 3.0 x 10-7

Finally, multiply the ratio by 1,000,000 to get the concentration in ppm:

(3.0 x 10-7) * 1,000,000 = 0.3 ppm

So, the concentration of helium gas dissolved in water is 0.3 ppm.

Oh, helium gas dissolved in water? That's quite a unique request! Well, let me calculate that for you.

To express the concentration in parts per million (ppm), we need to convert the units.

First, let's convert the weight of dissolved helium to grams:
3.0 x 10-4 g

Now, we need to determine the concentration in ppm, which is equivalent to mg/L. Since 1 g = 1000 mg and 1 L = 1000 mL, we have:

(3.0 x 10-4 g) / (1 L) x (1000 mg / 1 g) = 0.3 mg/L

So the concentration of helium gas dissolved in water is 0.3 mg/L, which can also be expressed as 0.3 ppm.

Now that we've got that all figured out, I must admit it's quite a balloon-worthy concentration! Keep an eye out for any floating glasses of water, you never know when you might find them.

To express the concentration of helium gas dissolved in water in parts per million (ppm), follow these steps:

Step 1: Convert the mass of helium gas to milligrams (mg):
- Given: 3.0 x 10^-4 g
- Since there are 1000 mg in 1 g, multiply the given mass by 1000 to convert it to milligrams:
3.0 x 10^-4 g * 1000 mg/g = 0.3 mg

Step 2: Calculate the concentration in ppm:
- The concentration in ppm is calculated by dividing the mass of the solute by the mass of the solution and multiplying by 1,000,000.
- In this case, the solute is helium gas and the solution is water.

- Given: mass of solute (helium) = 0.3 mg
mass of solution (water) = 1,000,000 mg (since 1 liter of water has a mass of 1,000,000 mg)

- Calculate the concentration in ppm:
concentration = (mass of solute / mass of solution) * 1,000,000
= (0.3 mg / 1,000,000 mg) * 1,000,000
= 0.3 ppm

Therefore, the concentration of helium gas dissolved in water is 0.3 ppm.

To express the concentration of helium gas dissolved in water in parts per million (ppm), we need to calculate the number of parts of helium per one million parts of the solution.

The formula for calculating concentration in ppm is as follows:

Concentration (ppm) = (Mass of solute / Mass of solution) x 1,000,000

Given:
Mass of solute (helium gas) = 3.0 x 10^(-4) g
Mass of solution (water) = Let's assume as 1 liter (L) of water

First, we need to convert 1 liter (L) of water to grams (g). The density of water is approximately 1 g/mL, and since 1 liter is equal to 1000 mL:

Mass of solution (water) = 1 L x 1000 g/L = 1000 g

Now we can substitute the values into the formula and calculate the concentration in ppm:

Concentration (ppm) = (3.0 x 10^(-4) g / 1000 g) x 1,000,000
= 300 g / 1000 g x 1,000,000
= 300 x 1000
= 300,000 ppm

Therefore, the concentration of helium gas dissolved in water is 300,000 parts per million (ppm).