General Chemistry Answers

Determine by calculation, the number of moles of gas formed at STP.

Sodium reacts rapidly with water to form sodium hydroxide solution and how is the gas released?

Substances which during their dissociation in aqueous solution give hydroxyl ions as the only anions are called?

The heat which is required for 1 mole of substance to increase the temperature by 1 Kelvin, is called?

In which of the following series do we have only substances that do NOT conduct electricity and heat? A) diamond, gold, rubber  B) diamond, glass, rubber  C) graphite, rubber, glass  D) silver, diamond, graphite   

The chemical symbols of several elements are provided. Give the corresponding name of the element. Spelling counts.

How many Mg in 9.900 x 10^-6  Tg ? Note, this is set up as a two-step problem

The intermediate answer is numerically 

Blank 1. Fill in the blank, read surrounding text.

 and the units are  

Blank 2. Fill in the blank, read surrounding text.

 .

The final answer is numerically 

Blank 3. Fill in the blank, read surrounding text.

 and the units are  

Blank 4. Fill in the blank, read surrounding text.

 .

How many grams of magnesium oxide are obtained during the combustion of 1 g of magnesium in air according to the reaction 2Mg (s) + O₂ (g) -> 2MgO (s). Ar(Mg) = 24.3; Ar(O) = 16

Which electronic configuration and position in the eriodic system of elements corresponds to the sodium Na atom (11)? A) [Ar]4s¹, Group I, Period 4 B) [Ar]4s¹, Group IV, Period 1 C) [Ar]3s¹, Group I, Period 3 D) [Ar]3s¹, Group III, Period 1

The elements which are on the right side of the periodic table of elements more easily accept electrons and this happens as a consequence?