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
Katen [24]
2 years ago
15

5. A sample of carbon dioxide (CO2) has a mass of 52.0 g. a. How many carbon atoms are present?

Chemistry
1 answer:
vladimir2022 [97]2 years ago
7 0

Answer:

52.0 gof CO2 contains 7.1 *10^23 molecules

1 molecule of CO2 has a mass of 7.3*10^-23 grams

Explanation:

Step 1: Data given

Mass of CO2 = 52.0 grams

Molar mass of CO2 = 44.01 g/mol

Number of Avogadro = 6.022 * 10^23 / mol

Step 2: Calculate moles of CO2

Moles CO2 = Mass CO2 / molar mass CO2

Moles CO2 = 52.0 grams / 44.01 g/mol

Moles CO2 = 1.18 moles

Step 3: Calculate molecules in 1.18 moles CO2

Number of molecules = 1.18 moles * 6.022*10^23 = 7.1 *10^23 molecules

1 molecule of CO2

Number of moles = 1 / 6.022*10^23

Number of moles = 1.66 *10^-24

Mass CO2 = 1.66*10^-24 moles * 44.01 g/mol

Mass CO2 = 7.3*10^-23 grams

You might be interested in
A sample of carbon monoxide gas is initially in a 5858 mL container. The gas is then moved to 3.29 L container at a temperature
Doss [256]

Answer:

d i took the test

Explanation:

5 0
3 years ago
Please help!
ANEK [815]

Answer:

A- Physical, B- Chemical, C- chemical, D- Physical

Explanation:

A is physical because you can see it changing its form is changing.

B is Chemical because a new substance is formed creating the orange color of rust.

C is a Chemical reaction because it is being broken down so the banana itself is changing not just how we see it.

D is physical because we are just changing the shape/ size of the item, not anything to do with its substances.

8 0
2 years ago
Read 2 more answers
A natural charge by an atom is caused by which of the following conditions?
Lera25 [3.4K]

Answer:

C

Explanation:

I'm assuming that you meant to type neutral charge.

Since electrons are negative and protons are positive, having a balanced number of both of these would cause an atom to have a neutral charge.

5 0
2 years ago
1. NaOH mass of a solution of 200g in which its percentage is 25%. What mass of sulfuric acid solution is needed to completely n
Ede4ka [16]

Answer:

m_{H2SO4 = 61.25 g

m_{Na2SO4} = 88.75 g

Explanation:

m_{NaOH} = \frac{200 . 25 }{100} = 50 g

⇒ n_{NaOH} = \frac{50}{40} = 1.25 (moles)

2NaOH + H2SO4 ⇒ Na2SO4 + 2H2O

   2        :     1           :      1         :    2

 1.25                                                       (moles)

⇒  n_{H2SO4} = 1.25 × 1 ÷ 2 = 0.625 (moles) ⇒ m_{H2SO4} = 0.625 × 98 = 61.25 g

    n_{Na2SO4} = 1.25 × 1 ÷ 2 = 0.625 (moles) ⇒m_{Na2SO4} = 0.625 × 142 = 88.75 g

4 0
3 years ago
Answer the following questions when 45mL sample of 0.175 M KOH is titrated with 0.200 M HI
Tanya [424]

Answer: Initial pH is 13.243

12.83

1.3

40ml

7

Explanation:

Just finished the test.

5 0
2 years ago
Other questions:
  • A student wants to reclaim the iron from an 18.0-gram sample of iron(III) oxide, which
    10·2 answers
  • What is the change on the subatomic particles represented in Figure 4-3? Assuming all the particles in the nucleus are visible,
    15·2 answers
  • If the pressure on 36.0 milliliters of a gas at STP is changed to a pressure of 25.3 kPa at constant temperature, the new volume
    6·2 answers
  • The molar volume of oxygen,O2, is 3.90 dm3 mol-1 at 10.0 bar and 200 degree centigrade. Assuming that the expansion may be trunc
    14·1 answer
  • The equation for the chemical reaction shown below is not balanced. What number should replace the question mark to balance this
    8·1 answer
  • WHat are the 7 parts of the water cycle
    15·1 answer
  • Why does an atom of sodium have a larger atomic radius than an atom of chlorine?
    8·1 answer
  • Dissolving continues until an equilibrium is established.<br> O True<br> O False
    6·1 answer
  • Balance the equation for <br> __Ca+__Pb(NO3)2—__Pb+__Ca(NO3)2
    13·1 answer
  • HELP!! 50 POINTS! PLEASE ANSWER AND EXPLAIN WHY:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!