1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
joja [24]
3 years ago
10

How many atoms are in 2 Fe? 1 2 3 4

Chemistry
1 answer:
otez555 [7]3 years ago
4 0

Answer:

2 (two) atoms of iron

Explanation:

You might be interested in
A stainless steel knife has a volume of 1.2 cubic centimeters and a mass of 9.0 grams.
bija089 [108]

Answer:

7.5

Explanation:

density = mass / volume

9÷1.2 = 7.5

5 0
2 years ago
In the compound cah2 calcium has an oxidation number of 2+ and hydrogen has an oxidation number of
sesenic [268]

The oxidation number of H is -1.

Sum of the oxidation numbers in each element = charge of the complex

CaH₂ has 1 Ca atom and 2H atoms. The charge of the complex is zero. Let’s say Oxidation number of H is "a".

Then,

<span>    (+2) + 2 x a = 0 </span>

<span>        +2  + 2a  = 0</span>

                  2a = -2

                    a = -1

Hence, the oxidation number of Hydrogen atom in CaH₂ is -1


7 0
3 years ago
Use Boyle’s law to complete the following:
mixas84 [53]

Answer:

The answer to your question is: 0.25 l

Explanation:

Data

P1 = 1 atm

V1 = 0.5 l

P2 =2 atm

V2 = ?

T = constant

Formula

          V1P1 = V2P2

Clear V2 from the formula

            V2 = V1P1/P2

Substitution

            V2 = (0.5)(1)/2  substitution

                  = 0.25 l       result

3 0
3 years ago
PLEASE HELP ME OUT!!
vesna_86 [32]

Answer:

hydrogen

Explanation:

7 0
3 years ago
Can someone help please? :)
Leno4ka [110]

1) This is a definition.

2) Protons are given by the bottom number (since atomic number = number of protons).

3) Neutrons = (mass number)-(atomic number), which are the top and bottom numbers, respectively.

4) Nuclear fusion involves combining two things together, which is only reflected by the last option.

5) This is a fact.

6) This is a fact.

7) This is a fact.

8) This is a fact.

9) The correct option is the explanation.

7 0
2 years ago
Other questions:
  • Which of these liquids are solutions? Check all that apply.
    5·2 answers
  • One question for chem?? Image attached? please help ! :)
    13·1 answer
  • What type of chemical reaction is cellular respiration
    14·2 answers
  • Which descriptions apply to isomers? Check all that apply.
    12·2 answers
  • According to the law of conservation of mass the mass of reactants will be _____to the mass of products
    5·1 answer
  • A sample that contains only SrCO3 and BaCO3 weighs 0.800 g. When it is dissolved in excess acid, 0.211 g car- bon dioxide is lib
    9·1 answer
  • In a solution, the parts of the solution are mixed A) chemically. B) physically. C) only in water. D) by electronic means.
    9·2 answers
  • Which components of a galaxy move in circular patterns or revolve around a star?
    14·1 answer
  • Issues guidelines for financial system operated by all commerical banks in India​
    12·1 answer
  • G in your own words, summarize the issue of ocean acidification: what is it and what's causing it?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!