Chemistry, 19.09.2021 23:10 NetherisIsTheQueen

1.Which statement best describes an oxidation-reduction reaction?(1 point) A. a chemical reaction in which there are fewer products than reactants

B. a chemical reaction that involves oxygen

C. a chemical reaction in which electrons are released from the system

D. a chemical reaction in which electrons are transferred between reactants

2.Beryllium (Be) has four electrons. Fluorine (F) has nine electrons. Which chemical formula shows the correct subscripts for the product of the reaction when beryllium and fluorine combine?(1 point)

A. Be2F

B. BeF

C. Be2F2

D. BeF2

Use the reaction to answer the question.

2KCl → 2K + Cl2

Which type of reaction is shown?

(1 point)

A. combination

B. displacement

C. decomposition

D. combustion

Answers: 2

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 16:30

Which metals are called noble metals

Answers: 2

Answer

Chemistry, 22.06.2019 18:10

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

Answers: 1

Answer

Chemistry, 22.06.2019 18:30

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o

Answers: 2

Answer

Chemistry, 23.06.2019 06:00

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes? or no? this question is worth 20 points! let it be correct!

Answers: 1

Answer

You know the right answer?

1.Which statement best describes an oxidation-reduction reaction?(1 point) A. a chemical reaction...

Questions