Which choice best shows what ALL cells need to survive? O A. food, water, oxygen, and energy
O B. food, water, energy, and sunlight
O C. food, water, energy, and waste removal
O D. food, water, carbon dioxide, and heat

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98