Why is the half life of a radioactive substance independent of the initial amount of the substance that is present

For the reaction CH4 + 2O2 = CO2 + 2H2O, how many moles of water ae produced from 1 mole of CH4?

Solid magnesium has mass of 1300g and a volume of 743cm. what's the density of magnesium?

A car travels 57.9 miles per hour for 3.2 hours estimate the number of miles driven

What is the maximum amount of zno (81.4084 g/mol) which could be formed from 12.85 g of zns (97.474 g/mol) and 15.91 g of o2 (31.9988 g/mol) ?

Although burning waste is one way to reduce garbage that goes into landfills, it has negative enviromental consequences. Which of the following is a possible negative consequence of burning waste

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these

What is the mass of a box of nails

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (dа ta: H₂O (l) → H₂O (g) ΔH = 44.01 kJ/mol.) A.

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium. Chemical equation for producing ammonia: N2 + 3H2 ⇌ 2NH3 + energy

How many Joules are equivalent to 75 Calories?