An atom with an atomic number of 12 and a mass number of 25 can best be described by which of these

Which of the following is the correct formula for barium (ll) sulfate? a) Bas D) Bas c) BaSO4 a) Ba2SO4

Perform the following calculations. Express the answers with the correct number of significant figures. a) 7 g - 3.5 g - 2.75 g = b) 200.00 kg - 199.0 kg = c) 25 L - 3.0 L = d) 0.67 cm + 2.0 cm + 0.090 cm = e) 104.5 g + 0.40 g =

Which is not an example of a carbon sink? a) car b) ocean c) ice sheet d) forest ive never heard of a carbon sink before yet my teacher gave me this question.

You have 200 g of a substance with a molar mass of 150 g/mol. How many moles of the substance do you have?

What elements does the sun use in its fusion reaction?

Use the unbalanced equation NH3+O2--> NO+H2O to find the mole ratio between NH3 ad O2

Explică rolul chimiei în protejarea mediului înconjurător?

A sample of neon gas has a volume of 2.85 L and a temperature of 15 °C, under a constant pressure. What is the new temperature (in °C), if the volume is decreased to 1.45 L?

Which type of chemical reaction occurs in Ca+CI2 CaCI2

Which of the following organisms are carnivores? Producers Omnivores Consumers Decomposers