Which group contains elements whose atoms have six electrons in their valence shell?

Which resources MAY be used by autotrophs to make their food? 1. oxygen 2. glucose 3. soil 4. carbon dioxide 5. hydrogen sulfide (A) 1 and 2 (B) 2 and 3 (C) 3 and 4 (D) 4 and 5

2) suppose you discovered a new element with 120 protons and 2 electrons in its outermost energy level (valence shell). a. in which group does this new element belong? b.

Team distillation may be used to separate a mixture of p-nitrophenol and o-nitrophenol. the ortho isomer distills at 93 _c; the para isomer does not. explain.

Write the complete electron configuration for the common monatomic ion formed by the element calcium, ca.

4) Calculate the heat needed to melt 40.0 g of ice at 0°C?

The following procedure is a simple though somewhat crude wayto measure the molar mass of a gas. A liquid of mass 0.0184 g isintroduced into a syringe by injection through a rubber tip using ahypodermic needle.

Vinegar is a solution of acetic acid, CH3COOH, dissolved in water. A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?

Which nonmetal is a liquid at stp

How many moles does the mass quantity 130g of H2O have?

How many atoms are in 313.5 L of Bromine (Br) gas