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
LUCKY_DIMON [66]
2 years ago
7

How many atoms are there in 7.80 moles of germanium

Chemistry
1 answer:
Orlov [11]2 years ago
8 0
<h3>Answer:</h3>

4.70 × 10²⁴ atoms Ge

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

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<h3>Explanation:</h3>

<u>Step 1: Define</u>

7.80 mol Ge

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

Avogadro's Number

<u>Step 3: Convert</u>

\displaystyle 7.80 \ mol \ Ge(\frac{6.022 \cdot 10^{23} \ atoms \ Ge}{1 \ mol \ Ge} ) = 4.69716 × 10²⁴ atoms Ge

<u>Step 4: Check</u>

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

4.69716 × 10²⁴ atoms Ge ≈ 4.70 × 10²⁴ atoms Ge

You might be interested in
Diamond is a natural form of pure carbon. What number of atoms of carbon are in a 1.00-carat diamond (1.00 carat = 0.200 g)?
slega [8]

Answer:

1.004×10²²

Explanation:

The molar mass of carbon is 12 g/mol

which means that:

<u>1 mole of carbon atoms has a mass of 12 grams.</u>

Since, diamond is a allotrope of carbon.

Mass of  1.00-carat diamond in grams is:

1.00 carat = 0.200 g

<u> Since, 1 mole of C contains 6.022×10²³ atoms of C</u>

So,  

12 grams contains 6.022×10²³ atoms of C

1 gram contains 6.022×10²³/ 12 atoms of C

0.200 gram contains (6.022×10²³/ 12)×0.200 atoms of C

Thus,

<u>1 carat diamond contains 1.004×10²² atoms of C.</u>

8 0
2 years ago
Consider the reaction. mc014-1.jpg How many grams of methane should be burned in an excess of oxygen at STP to obtain 5.6 L of c
garri49 [273]
The reaction for the combustion of methane can be expressed as follows.
                           CH4 + 2O2 --> CO2 + 2H2O
We solve first for the amount of carbon dioxide in moles by dividing the given volume by 22.4L which is the volume of 1 mole of gas at STP.
                            moles of CO2 = (5.6 L) / (22.4 L/1 mole)
                             moles of CO2 = 0.25 moles
Then, we can see that every mole of carbon dioxide will need 1 mole of methane
                              moles methane = (0.25 moles CO2) x (1 moles O2/1 mole CO2)
                                                    = 0.25 moles CH4
Then, multiply this by the molar mass of methane which is 16 g/mole. Thus, the answer is 4 grams methane. 
5 0
3 years ago
Read 2 more answers
A scale shows colors from red to purple with labels from the red end of 0, 1 gastric acid, 2 lemon juice, 3 orange juice, 4 toma
MArishka [77]

Answer:

Gastric Acid?

Explanation:

Acid seems like it would have more ph

8 0
2 years ago
please help me please
Musya8 [376]

Answer:

Two advantages are: Its cheap and it is a renewable energy source. Two disadvantages are it's not windy everyday and it will take up a lot of space for windmills.

Explanation:

4 0
3 years ago
Which two structures play direct roles in permitting bacteria to adhere to each other or to other surfaces?
ICE Princess25 [194]

Answer: capsule and fimbriae

Explanation:

Many prokaryotes have sticky outermost layer called the capsule.It is made up of polysaccharides and it helps them clinging to each other or to other surfaces around them.It also helps prevent the cell from drying out.

Fimbriae,also known as attachment pilus,used by bacteria to adhere to one and other,animal cells or to any inanimate objects.

4 0
3 years ago
Other questions:
  • 2. Se combinan 40 g de SO2 y 25 g de O2 determine el porcentaje en masa del exceso con respecto a su masa inicial. P.A. (S = 32;
    14·1 answer
  • Explain what an ecosystem would look like without scavengers and decomposers.
    11·1 answer
  • Which conclusion is best supported by the information?
    5·2 answers
  • How do molecules appear in gas
    9·2 answers
  • MM H2O2 = 34.02 g/mol MM H2O = 18.02 g/mol MM O2 = 32 g/mol
    11·1 answer
  • Katie blows up a balloon and ties it so there is a fixed amount of air in the balloon. She wraps a piece of string around the wi
    15·1 answer
  • How are rare earth elements like neodymiun important to our technological world?
    6·1 answer
  • The pKa of a solution is defined by the equation pKa=-log Ka
    10·1 answer
  • ACTUAL YIELD VS THEORETICAL YIELD?
    9·1 answer
  • What happens when bonds are broken?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!