Convert 0.0035 NaCl by mass into parts per million of NACL.

To convert a mass fraction to parts per million (ppm), we need to multiply by 1,000,000.

0.0035 NaCl by mass = 0.0035 x 1,000,000 = 3500 ppm NaCl.

Write the ratio in THREE ways.

Five students were asked if they had a cell phone.
Four said yes and one said no.
What is the rate of students who DO NOT have a cellphone to the students who DO have a cell phone?

Ratio of students who do NOT have a cell phone to those who do have a cell phone can be written in the following ways:

1. 1:4
2. 1/4
3. 25%

To convert 0.0035 g of NaCl into parts per million (ppm), you need to use the following formula:

ppm = (mass of NaCl / total mass of solution) x 1,000,000

Assuming the total mass of the solution is 1 gram, you can calculate the ppm as follows:

ppm = (0.0035 g / 1 g) x 1,000,000

ppm = 3,500 ppm

Therefore, 0.0035 g of NaCl is equivalent to 3,500 parts per million (ppm) of NaCl.

To convert a mass concentration (in this case, 0.0035 NaCl) into parts per million (ppm), you need to follow these steps:

Step 1: Find the ratio or conversion factor between ppm and mass concentration.
1 ppm = 1 mg/L = 1 mg per 1 L = 1 mg per 1000 g.

Step 2: Convert the mass concentration from grams to milligrams.
0.0035 NaCl * 1000 mg/g = 3.5 mg NaCl.

Step 3: Apply the conversion factor to calculate the ppm value.
ppm = (mass of substance in mg / mass of solution in g) * 1,000,000.
ppm = (3.5 mg NaCl / 1000 g solution) * 1,000,000.
ppm = 3500 ppm.

Therefore, 0.0035 NaCl by mass is equivalent to 3500 parts per million (ppm) of NaCl.