An empty flask weighed 50.10g and 50.40g when filled with hydrogen, calculate its mass in grams when filled with sulphur dioxide under the same condition (So2=64)​

Which of the following about topsoil is fake?

The point where two air masses meet is called a

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite