Seawater contains approximately 3.5% NaCl by mass and has a density of 1.02g/mL. What volume of seawater conatains 1.0g of sodium

How many pi bonds are formed when sp2 hybridization occurs in ethene, C2H4? 1 2 0 3

Which type of reaction has the general formula of AB+CD - > AD+CB?

How is the molar mass of an element determined?

What radioactive element has the lowest atomic number

Which electron configuration represents the electrons of an atom in an excited state? (1) 2-4 (3) 2-7-2 (2) 2-6 (4) 2-8-2

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed

For which one of the following molecules is the indicated type of hybridization not appropriate for M the central atom? a. BeCl2 sp2 b. SiH4 sp3 c. BF3 sp2 d. C2H2 sp e. H2O sp3

P4O10 (s) = - 3110 kJ/mol H2O (l) = - 286 kJ/mol H3PO4 (s) = - 1279 kJ/mol Calculate the change in enthalpy for the following process: P4O10 (s) + 6H2O (l) → 4H3PO4 (s)

Aluminum bromide reacts with chlorine gas to produce aluminum chloride and liquid bromide, according to the chemical equation below: 2A1Br3 + 3Cl2 + 2AlCl3 + 3Br2 How many moles of Aluminum chloride are made if 779 g of chlorine gas are consumed?

When a cell is in late anaphase of mitosis, which of the following will we see?