What element produces violet light of approximately 412 nm?

a. hydrogen

b. mercury

c. sodium

d. neon

How many grams of fosforic acid (H3PO4) are required to prepare 500 mL of a 0.2 M solution?

Consider the following unbalanced equation. N2 + O2=N2O. When the equation is completely balanced using smallest whole numbers, the coefficient of N2 is ...

The thermal transfer of energy by electromagnetic waves through the vacuum of space is called what?

What mass of zinc oxide would be produced by the thermal decomposition of 375 grams of zinc carbonate? 162 grams 44 grams 243 grams 250 grams

For gamma radiation, what stops its penetrating abilities?

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.