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
UNO [17]
3 years ago
5

Express your answer using two significant figures. 2.7 cm3 = m3 2.0 mm3= m3

Chemistry
1 answer:
natka813 [3]3 years ago
8 0

Answer:

2.7 cm³ = 2.7 x 10⁻⁶ m³

2.0 mm³ = 2.0 x 10⁻⁹ m³

Explanation:

The values are multiplied by the conversion ratio, being sure to raise the ratio to the power of 3 so that the units properly cancel:

(2.7 cm³)(1m/100cm)³ = 2.7 x 10⁻⁶ m³

(2.0 mm³)(1m/1000mm)³ = 2.0 x 10⁻⁹ m³

You might be interested in
Why parafin oil use in melting
MatroZZZ [7]

Answer:

Paraffin oil is used for determination of boiling point and melting point for the following reasons: It has a very high boiling point and so it can be used to maintain high temperatures in the boiling and melting point apparatus without loss of the substance.

4 0
2 years ago
Which substance is a mixture<br><br> Table salt<br> Gasoline<br> Aluminum<br> Carbon Dioxide
NNADVOKAT [17]

Answer:

carbon dioxide

Explanation:

its 2 or more things

8 0
3 years ago
Read 2 more answers
Methane is the chief constituent of petroleum fuel <br> A:yes <br> B:no
Ad libitum [116K]
Yes

Methane also is the chief constituent of natural gas, which contains from 50 to 90 percent methane (depending on the source), and occurs as a component of firedamp (flammable gas) along coal seams.
3 0
3 years ago
Consider mixture C, which will cause the net reaction to proceed in reverse. Concentration (M)initial:change:equilibrium:[XY]0.2
Allushta [10]

This is an incomplete question, here is a complete question.

Calculating equilibrium concentrations when the net reaction proceeds in reverse Consider mixture C, which will cause the net reaction to proceed in reverse.

The chemical reaction is:

XY(g)\rightleftharpoons X(g)+Y(g)

Concentration(M)        [XY]            [X]            [Y]

(M)initial:                     0.200        0.300      0.300

change:                         +x               -x              -x

equilibrium:             0.200+x      0.300-x     0.300-x

The change in concentration, x, is positive for the reactants because they are produced and negative for the products because they are consumed. Based on a Kc value of 0.140 and the data table given, what are the equilibrium concentrations of XY, X, and Y, respectively?

Answer : The Equilibrium concentrations of XY, X, and Y is, 0.104 M, 0.204 M and 0.204 M respectively.

Explanation :

The chemical reaction is:

                                 XY(g)\rightleftharpoons X(g)+Y(g)

initial:                      0.200      0.300   0.300

change:                    +x             -x           -x

equilibrium:      (0.200+x)  (0.300-x)   (0.300-x)

The equilibrium constant expression will be:

K_c=\farc{[X][Y]}{[XY]}

Now put all the given values in this expression, we get:

0.140=\frac{(0.300-x)\times (0.300-x)}{(0.200+x)}

By solving the term 'x', we get:

x = 0.0963 and x = 0.644

We are neglecting the value of x = 0.644 because the equilibrium concentration can not be more than initial concentration.

Thus, the value of x = 0.0963

Equilibrium concentrations of XY = 0.200+x = 0.200+0.0963 = 0.104 M

Equilibrium concentrations of X = 0.300-x = 0.300-0.0963 = 0.204 M

Equilibrium concentrations of X = 0.300-x = 0.300-0.0963 = 0.204 M

6 0
3 years ago
6. Macromolecules represent which level of organization in the body?
hodyreva [135]

Answer:

Chemical

Explanation:

Macromolecules are part of the chemical components of cells. For example, DNA, proteins, and lipids.

Cells of similar types/function form tissues. Different types of tissues interact together to form organs. Organs form a common function.

6 0
3 years ago
Other questions:
  • A material that is dissolved in another material
    6·1 answer
  • Which statement is true when a crystal is formed from many metal atoms? .A. There are no bands being formed.. B.There are many m
    11·2 answers
  • How many electrons in an atom can share the quantum numbers n=2, l=1 and ml=1?
    7·2 answers
  • Which option is an example of a chemical change?
    7·2 answers
  • The diagram shows a ball resting at the top of a hill. A ball is at the top of a slope at point X. The bottom of the slope is po
    13·2 answers
  • Plz help Which is an example of an abiotic factor interacting with a biotic factor in an ecosystem?
    6·1 answer
  • You go rock climbing with a pack that weighs 70 Newtons, and you reach a height of 30 meters. How much work did you do to lift y
    13·1 answer
  • One of the main components of an airbag is the gas that fills it. As part of the design process, you need to determine the exact
    9·2 answers
  • mass number is the number of protons and neutrons in the nucleus of an isotope . how many protons in an oxygen-18 atom ?
    8·1 answer
  • 44.8 L He (g) to atoms
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!