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
IgorLugansk [536]
3 years ago
11

How many grams of NaHCO3 are needed to prepare 250 mL of 0.50 M NaHCO3?

Chemistry
1 answer:
forsale [732]3 years ago
6 0

Answer:

10.5g

Explanation:

First, let us calculate the number of mole of NaHCO3 present in the solution. This is illustrated below:

Volume = 250mL = 250/1000 = 0.25L

Molarity = 0.5M

Mole =?

Molarity = mole /Volume

Mole = Molarity x Volume

Mole = 0.5 x 0.25

Mole = 0.125 mole

Now, we shall be converting 0.125 mole of NaHCO3 to grams to obtain the desired result. This can be achieved by doing the following:

Molar Mass of NaHCO3 = 23 + 1 + 12 +(16x3) = 23 + 1 +12 +48 = 84g/mol

Number of mole of NaHCO3 = 0.125 mole

Mass of NaHCO3 =?

Mass = number of mole x molar Mass

Mass of NaHCO3 = 0.125 x 84

Mass of NaHCO3 = 10.5g

Therefore, 10.5g of NaHCO3 is needed.

You might be interested in
The amount of water vapor in a given volume of air is ______________ .The amount of water vapor in the air at any one time depen
Eduardwww [97]

Answer:

The amount of water vapor in a given volume of air is humidity.The amount of water vapor in the air at any one time depends on temperature . Warmer air holds more water than cooler air. Clouds form when humidity is low and thetemperature is high . Relative humidity is defined as the amount of water vapor in the air divided by the amount that would have to be present in the same air to form a cloud or condense on a surface. Dew is related to the humidity of the previous day. The air temperature at which water vapor in the air condenses onto cool surfaces is the dew point.

Explanation:

8 0
3 years ago
Use the concept of natural selection to explain why organisms typically adapt over time.
CaHeK987 [17]
Organisms is an environment or habitat for species
6 0
3 years ago
Read 2 more answers
Cyclopropane is more reactive than most cycloalkanes. What factors lead to cyclopropane being less stable than the other cycloal
maw [93]

Answer: The factor that lead to cyclopropane being less stable than the other cycloalkanes is the presence of a RING STRAIN.

Explanation:

In organic chemistry, the end carbon atoms of an open aliphatic chain can join together to form a closed system or ring to form cycloalkanes. Such compounds are known as cyclic compounds. Examples include cyclopropane, cyclobutane, cyclopentane and many among others.

Cyclopropane is less stable than other cycloalkanes mentioned above because of the presence of ring strain in its structural arrangement. The ring strain is the spatial orientation of atoms of the cycloalkane compounds which tend to give off a very high and non favourable energy. The release of heat energy which is stored in the bonds and molecules cause the ring to be UNSTABLE and REACTIVE.

The presence of the ring strain affects mainly the structures and the conformational function of the smaller cycloalkanes. cyclopropane, which is the smallest cycloalkane than the rest mentioned above, contains only 3 carbons with a small ring.

8 0
3 years ago
Why does distillation produce pure water but filtration does not?
ASHA 777 [7]

Filtration is used to separate large particles but this process does not provide pure solutions as some impurities still remain in the solution. On the other hand, distillation helps in the formation of pure water as it removes the impurities from the water or solution.

7 0
3 years ago
HELPPPPP MMMMEEEEEEEE
Scilla [17]
Rr - Round eyes. the two alleles are R and r, and if R is dominant, the phenotype will be round
7 0
3 years ago
Read 2 more answers
Other questions:
  • An atom's Lewis dot structure has three dots. Which of the following elements could it be, and why? Aluminum, because it is in g
    14·2 answers
  • Why does food wrapped in aluminum foil keep warm for a long time? A) Aluminum foil is an insulator and prevents heat loss by con
    15·2 answers
  • What distinguishes science from other disciplines that do not use scientific methods?
    9·1 answer
  • A 1.0857 gram pure sample of a compound containing only carbon, hydrogen, and oxygen was burned in excess oxygen gas. 2.190 g of
    6·1 answer
  • Is iron (Fe) an ion? <br>Name examples of ions. ​
    6·1 answer
  • If 2 or more elements are involved in a chemical reaction, they will most likely form a/an
    5·1 answer
  • What is the relationship between exposure to a virus and developing and immunity to it<br> ?
    11·1 answer
  • Please help will give 40 points and brainiest
    7·1 answer
  • Are sound waves longitudinal or transverse?<br><br> __________________
    12·2 answers
  • In a constant-pressure calorimeter, the temperature of 60.0 g of water increases by 4.50 °C. What amount of heat is transferred
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!