Why might someone write their postcode on a tv or computer using a pen with fluorescent ink that is not visible in normal light?

Describe how you would prepare exactly 80 ml of a 0.2 M solution of glycerol in water. The molecular weight of glycerol is 92.1 g/mol. The density of glycerol is 1.26 g/ml 4. What is the concentration of a 1:10 dilution of a 2.

Which materials are typically used as thermal insulators

The environment needs to what for natural selection to occur

Is granite a liquid gas or solid at room temperature

Which of these has a neutral ph? select one: a. distilled water b. salt water c. milk?

How many hydrogen atoms are in 2.80 mol of ammonium sulfide?

What is a large oval structure that directs all of the cells activities?

HBr + H₂SO₄ SO₂ + Br₂ + H₂O What is the oxidation number of the oxidizing agent? What is the oxidation number of the reducing agent?

How do find the volume of 60.0g of ether if the density is. 70g/mL?

A population of crabs live on a light-colored sandy beach. In this environment there is a population of birds that eat the crabs. One year, there is a volcanic eruption near the beach and dark volcanic ash covers the beach.