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2 years ago

Please help me I will give you the brain thing and extra points. image below

Chemistry

2 answers:

olga55 [171]2 years ago

7 0

Answer:

Explanation:

dexar [7]2 years ago

3 0

I think the answer is b :)

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One gram of carbon contains 50,200,000,000,000,000,000,000 atoms. express the number of carbon atoms in scientific notation

german

N(C)=5,02·10²² atoms

calculation check:

N(C)=(1/12)*6.022*10²³=0.5018*10²³≈5.02·10²²

5 0

3 years ago

Which of the following statements is true?

VikaD [51]

The answer is likely to be A

7 0

3 years ago

Read 2 more answers

I need help:<br>Ionic Compounds are formed from atoms that have opposite charges. True Or False?

liq [111]

It is <u>true</u> that ionic compounds are formed from atoms that have opposite charges.

<h3>What are ionic compounds?</h3>

Ionic compounds are chemical compounds made up of ions held together by electrostatic forces termed ionic bonding.

The ionic compound formed is neutrally charged but consists of positively charged ions called cations and negatively charged ions called anions.

For example, the sodium ions attract chloride ions and the chloride ion attracts sodium ions. The result is the formation of an ionic compound with cation Na+ and anion Cl– ions.

Therefore, it is true that an ionic compound is made up of positive and negative ions.

Learn more about ionic compound at: brainly.com/question/9167977

#SPJ1

3 0

1 year ago

Which is the correct number of moles of NO that is produced from 13.2 moles of oxygen

Oksanka [162]

<h3>Answer:</h3>

10.6 mol NO

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 4NH₃ + 5O₂ → 4NO + 6H₂O

[Given] 13.2 mol O₂

<u>Step 2: Identify Conversions</u>

[RxN] 5 mol O₂ → 4 mol NO

<u>Step 3: Stoich</u>

[DA] Set up: $\displaystyle 13.2 \ mol \ O_2(\frac{4 \ mol \ NO}{5 \ mol \ O_2})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 10.56 \ mol \ NO$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

10.56 mol NO ≈ 10.6 mol NO

5 0

2 years ago

What is its molecular formula?

uysha [10]

Answer:

C₆H₈O₆

Explanation:

The molecular formula of given compound is C₆H₈O₆. Because there are six carbon, six oxygen and eight hydrogen atom present in this compound.

The molecular weight of following compound is,

C₆H₈O₆

C = 12 amu

H = 1 amu

O = 16 amu

C₆H₈O₆ = 12×6 + 1×8 + 16×6

C₆H₈O₆ = 72 +8 + 96

C₆H₈O₆ = 176 g/mol

7 0

2 years ago