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
patriot [66]
2 years ago
13

Calculate the number of moles in 9 g of water​

Chemistry
2 answers:
Slav-nsk [51]2 years ago
8 0

Answer:

0.5 mole

Explanation:

m(h2o)=2×1+16=18g

n=m÷Me=9÷18=0.5mole

tangare [24]2 years ago
7 0

Answer:

= 0.5 moles of water

formular \: mass \: of \: water \:  = (2 \times 1)  + 16  = 18 \\ 18g \: of \: water \: are \: weighed \: by \: 1 \: mole. \\ 9g \: will \: be \: weighed \: by \:  \frac{9 \times 1}{18}  \\  =  \frac{9}{18} moles \\  = 0.5 \: moles \: of \: water

You might be interested in
.................. are microorganism used to improve soil fertility.<br>plz ams it correct​
slavikrds [6]

Answer:

Some bacteria like <em><u>rhizobium</u></em> and <u><em>blue green algae</em></u> are able to fix nitrogen gas from the atmosphere to enrich the soil with nitrogen compounds and increase its fertility. The nitrogen-fixing bacteria and blue green algae are called <u><em>biological nitrogen fixers.</em></u>

5 0
3 years ago
Read 2 more answers
Identify an alkene and carboxylic acid using primary observations
ehidna [41]

Answer:

The general formula for the carboxylic acids is C nH 2n+1COOH (where n is the number of carbon atoms in the molecule, minus 1).

Explanation:

<em>Hope </em><em>it </em><em>helps </em><em>u </em>

FOLLOW MY ACCOUNT PLS PLS

4 0
3 years ago
Help me solve. this is science. Which one is it
Vladimir [108]

Answer:

d is the correct answer i think

7 0
2 years ago
Determine whether a precipitate will form when 0.96g of Na2CO3 is combined with 0.20g BaBr2 in a 10 L solution.
Mashcka [7]

Answer:

Qsp > Ksp, BaCO3 will precipitate

Explanation:

The equation of the reaction is;

Na2CO3 + BaBr2 -------> 2NaBr + BaCO3

Since BaCO3 may form a precipitate we can determine the Qsp of the system.

Number of moles of Na2CO3 = 0.96g/106 g/mol = 9.1 * 10^-3 moles

concentration of NaCO3 = number of moles/volume of solution = 9.1 * 10^-3 moles/10 L = 9.1 * 10^-4 M

Number of moles of BaBr2 = 0.20g/297 g/mol = 6.7 * 10^-4 moles

concentration of BaBr2 = 6.7 * 10^-4 moles/10 L = 6.7 * 10^-5 M

Hence;

[Ba^2+] = 6.7 * 10^-5 M

[CO3^2-] = 9.1 * 10^-4 M

Qsp = [6.7 * 10^-5] [9.1 * 10^-4]

Qsp = 6.1 * 10^-8

But, Ksp for BaCO3 is 5.1*10^-9.

Since Qsp > Ksp, BaCO3 will precipitate

3 0
3 years ago
The unit conversion between rankine and kelvin is (linear, exponential, quadratic, none of the above)?
diamong [38]

Answer:

Unit conversion between Rankine and Kelvin is linear.

Unit conversion between degree Celsius and degree Fahrenheit is linear.

Explanation:

Relation between rankine and Kelvin is

R\ =\ \dfrac{9}{5}\ K

So, the plot between Rankine and Kelvin is a straight line with zero intercept and has a slope having value \dfrac{9}{5}.

Relation between degrees Celsius and degrees Fahrenheit is given by

^{\circ}C\ =\ \dfrac{5}{9}\ (^{\circ}F\ -\ 32)

So, the plot between degrees Celsius and degrees Fahrenheit is a straight line with slope \dfrac{5}{9} and negative intercept of \dfrac{160}{9}.

4 0
3 years ago
Other questions:
  • If 498 mol of octane combusts, what volume of carbon dioxide is produced at 23.0 °c and 0.995 atm?
    15·1 answer
  • The diagrams to the right show the distribution and arrangement of gas particles in two different containers. According to kinet
    7·2 answers
  • Need someone to answer this question as soon as possible
    10·1 answer
  • What causes weather?
    14·1 answer
  • What the Purpose of seeds
    14·1 answer
  • Fossil fuels indirectly rely on what source for their energy?
    8·2 answers
  • Hydrogen bonding is present in all of the following molecular solids EXCEPT ____.a) H2O2 b) PH3 c) H2SO4 d) NH3
    9·2 answers
  • Which of these are examples of passive transport? A. osmosis B.diffusion c. endocytosis d.8 mitosis​
    9·1 answer
  • La columna de la izquierda corresponde a los tipos de sales y la columna derecha a los tipos de fórmula que presentan. Relaciona
    6·1 answer
  • A red car and a blue car collide. What would be an example of Locard's exchange principle in this situation?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!