Name two elements that hace properties similar to those of the element calcium (ca).

How much potassium (mg) is in vita Brits for 100grams

Why does a person's heart rate increase during exercise? (1) Less oxygen is needed. (2) More oxygen is needed. (3) Less carbon dioxide is needed. (4) More carbon dioxide is needed

If 3.0 grams of strontium-90 in a rock sample remained in 1989, approximately how many grams of strontium-90 were present in the original rock sample in 1933?

Why is the isotope mass multiplied by the isotopes percent abundance?

How many g of silver chloride will be produced by reacting 10g of silver nitrate with sodium chloride?

The data below were collected for the following reaction at 500 ∘C: CH3CN (g) →CH3NC (g) Time (h) [CH3CN] (M) 0.0 1.000 5.0 0.794 10.0 0.631 15.0 0.501 20.0 0.398 25.0 0.

How do i convert 3.00 moles H2 to molecules?

How can you use the chemical formulas for sucrose (C6H, 20,) and rust (Fe, O,) to classity them ionic or molecular compounds?

What is true of energy as is passes through an ecosystem? a. All of the energy in an organism is used by the animal that eats it. b. Any stored energy in an organism is used by the animal that eats it. c.

Which can associate a suspect and the firing of a gun? (its not b) A) markings on the gun's exterior B) markings on the casing C) markings on the bullet D) powder residues