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
Alex73 [517]
3 years ago
15

Need help with 7,9 and may you check my answer for 8 to ?

Chemistry
2 answers:
fomenos3 years ago
8 0
8 looks right to me but not 100%
steposvetlana [31]3 years ago
7 0
Number 9 is C because they are the same element but different numbers. Number 8 is B because they are isotopes of each other, and isotopes have varying number of protons (that’s what make them isotopes of each other.) Number 7 is B.
You might be interested in
How can a chemical reaction be sped up?Select from the drop-down menu to correctly complete the statement.
lara31 [8.8K]

Answer: Catalyst

Explanation: it speeds it up lol but basically the catalyst helps speed up the chemical reaction by reducing the activation energy or changing the reaction machenism/

8 0
2 years ago
Do humans really have a third eye
Dominik [7]
Well I wouldn't quite call it a third eye but yes we have the ability to see things if we connect to our inner selves
6 0
3 years ago
Read 2 more answers
Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is _______ , and the chem
Kisachek [45]

Answer:

Hello my Friend! The answer is: Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is +3 , and the chemical formula of the compound is Mn2O3.

Explanation:

Manganese can have two oxidation states: +2 and +3, but in this case, the "(III)"  indicates that in this compound, the state of oxidation is +3.

7 0
3 years ago
Read 2 more answers
Which of the following is an oxidation half reaction
Ksju [112]

Answer:

Sn²⁺ → Sn⁴⁺ + 2e⁻

Explanation:

3 0
2 years ago
Read 2 more answers
7. Suppose 1.01 g of iron (III) chloride is placed in a 10.00-mL volumetric flask with a bit of water in it. The flask is shaken
Nana76 [90]

<u>Answer:</u> The molarity of Iron (III) chloride is 0.622 M.

<u>Explanation:</u>

Molarity is defined as the number of moles present in one liter of solution.  The equation used to calculate molarity of the solution is:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

Or,

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Mass of iron (III) chloride = 1.01 g

Molar mass of iron (III) chloride = 162.2 g/mol

Volume of the solution = 10 mL

Putting values in above equation, we get:

\text{Molarity of Iron (III) chloride}=\frac{1.01g\times 1000}{162.2g/mol\times 10mL}\\\\\text{Molarity of Iron (III) chloride}=0.622M

Hence, the molarity of Iron (III) chloride is 0.622 M.

3 0
2 years ago
Other questions:
  • ReAcTanTS and PrOducTS
    7·1 answer
  • What is the IUPAC name for the compound shown below? ch3ch2ch2cnhch2ch3
    9·2 answers
  • onsider the isomerization of butane with an equilibrium constant of . The system is originally at equilibrium with [butane] = 1.
    14·1 answer
  • What do the coefficients in front of the reactants and products in a chemical reaction represent ?
    8·1 answer
  • Ciara’s bike has rusted, which means that the iron in the metal changed to rust.
    10·2 answers
  • How many kJ are 3,340J?
    7·1 answer
  • Which element below has the highest electronegativity? beryllium, carbon, fluorine, nitrogen
    8·2 answers
  • URGENT:
    14·1 answer
  • $5,000 multiplyed by $150 multiplyed by $2500 multiplyed by 3%​
    11·2 answers
  • How exactly are synthetic paint brushes made? Nylon?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!