Do exothermic reactions obey the law of conservation of energy?

at do all elements in a column in the periodic table have in common? Their atoms have the same number of valence electrons. Their atoms have the same atomic mass. Their atoms have the same number of protons and electrons.

An FM radio station has a wavelength of 2.813 m. Convert this length to feet.

Why could a diet low in carbohydrates be dangerous? A_The body could break down proteins from muscles for energy. B_The increased level of starches would provide excess energy. C_The body could take in too much dietary fiber, which harms cells.

Horizontal rows are called

What is the correct Lewis electron-dot structure for the compound magnesium fluoride?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda