Which element on the periodic table is found in liver and is needed to prevent anaemia

How many electrons will calcium gain or lose in forming an ion

ou must discard your lab coat A. You are allowed to recycle your lab coat. B. in the broken glass bin. C. in the regular trash. D. outside of lab.

Describe two ways that water moves through earthy atmosphere in the water cycle.

Suppose that a laboratory analysis of white powder showed 42.59% Na, 12.02% C, and 44.99% oxygen. Would you report that the compound is sodium oxalate or sodium carbonate? (Use 43.38% Na, 11.33% C, and 45.29% O for sodium carbonate, and 34.

4) How many grams are there in 7.40 moles of AgNO3

Describe a proton, neutron, and electron. Where are these particles located inside an atom.

A sample of gas is at 273°K and 2.00 atm with a volume of 6.00 liters. When the gas is compressed to 3.00 liters and the pressure increases to 3.00 atm, what is the new temperature of the sample?

Which oxygen pachages materials and distributed them throughout the cell

How many atoms in 3 mol zn

Isotopes: are atoms of different elements which have the same mass are atoms of the same element with equal numbers of neutrons are atoms of the same element with different numbers of neutrons are atoms of the same element with equal numbers of