Suppose you have 100 grams of a radioisotope with a half-life of 100 years. How much of the isotope will you have after 200 years?

1. Which of the following is not an example of a change that causes acceleration? A decrease in speed 20% B increase in time 80% C change of direction Dincrease in speed

Identify the missing coefficient in the balanced equation and classify the type of reaction. Al2 (CO3) 3 ⟶ Al2O3 + ___CO2

Why does raising salinity cause sodium alginateyeast spheres to rise faster?

What is the product (s) in this combination reaction? MgO + CO2

Why is magma that contains little silica less likely to erupt explosively?

What is the formula of hydronitric acid

How many moles are present in 34 grams of cu (oh) 2? * ?

A student dissolves 20g of potassium chloride in 100cm³ of water in a beaker. What is the concentration of the solution in g/dm³?

List of solid mixtures in a classroom

Which quantum number describes the energy level of an electron? Spin quantum number Principal quantum number Magnetic quantum number Angular momentum quantum number