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
Olenka [21]
3 years ago
8

What is the percentage of sodium presents in sodium hydrogen carbonate NaHCO3

Chemistry
1 answer:
STatiana [176]3 years ago
3 0

Answer:-

27.38%

Explanation:-

Molecular weight of sodium hydrogen carbonate NaHCO3

= 23 x 1 + 1 x 1 + 12 x 1 + 16 x 3

= 84 gram

Total sodium Na present in NaHCO3 = 23 x 1 = 23 gram

Percentage of sodium present=

Total sodium x 100/ (Total molecular weight)

= 23 x 100 / 84

= 27.38 %

You might be interested in
What is Tiny grains that contain sperm call
astra-53 [7]

Answer:

Pollen

Explanation:

Pollen is a powdery substance consisting of pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells).

6 0
3 years ago
Which substance can be broken down by a chemical change
ELEN [110]
Lots of substances. Rocks, metals, minerals, you name it.
5 0
3 years ago
Read 2 more answers
What is the pOH of a solution of HNO3 that has [OH-] = 9.50 10-9 M?
bekas [8.4K]

Answer:

The pOH of HNO₃ solution that ha OH⁻ concentration 9.50 ×10⁻⁹M is 8.

Explanation:

Given data:

[OH⁻] = 9.50 ×10⁻⁹M

pOH = ?

Solution:

pOH = -log[OH⁻]

Now we will put the value of OH⁻ concentration.

pOH = -log[9.50 ×10⁻⁹M]

pOH = 8

Thus the pOH of HNO₃ solution that ha OH⁻ concentration 9.50 ×10⁻⁹M is 8.

6 0
3 years ago
Read 2 more answers
Question
madam [21]

Answer:

The specific heat of the metal is 2.09899 J/g℃.

Explanation:

Given,

For Metal sample,

mass = 13 grams

T = 73°C

For Water sample,

mass = 60 grams

T = 22°C.

When the metal sample and water sample are mixed,

The addition of metal increases the temperature of the water, as the metal is at higher temperature, and the  addition of water decreases the temperature of metal. Therefore, heat lost by metal is equal to the heat gained by water.

Since, heat lost by metal is equal to the heat gained by water,

Qlost = Qgain

However,

Q = (mass) (ΔT) (Cp)

(mass) (ΔT) (Cp) = (mass) (ΔT) (Cp)

After mixing both samples, their temperature changes to 27°C.

It implies that , water sample temperature changed from  22°C to 27°C and metal sample temperature changed from 73°C to 27°C.

Since, Specific heat of water = 4.184 J/g°C

Let Cp be the specific heat of the metal.

Substituting values,

(13)(73°C - 27°C)(Cp) = (60)(27°C - 22℃)(4.184)

By solving, we get Cp =

Therefore, specific heat of the metal sample is 2.09899 J/g℃.

5 0
3 years ago
Explain the differences between bronze and brass, and steel and cast iron. Which is best used for cooking wares?
Dennis_Churaev [7]

Answer:

Steel and cast iron

Explanation:

They are all metal but assuming that you are finding the best material for your pan i suggest going for steel or cast iron

8 0
3 years ago
Other questions:
  • A bitter liquid ,ph= is classified as
    8·1 answer
  • PLS HELPPP I NEED ANSWERS QUICK !! WILL GIVE U BRAINLIEST
    15·1 answer
  • Which is an important question to consider when creating an environmental policy?
    6·2 answers
  • A large person and a small person wish to parachute at equal terminal velocities. The larger person will have toa)Jump first fro
    7·1 answer
  • Acids and bases can neutralize each other in double displacement reactions. For example, if hydrogen chloride (a strong acid, HC
    9·1 answer
  • Question 8<br> What is the effective nuclear charge for a 2nd row electron in sulfur
    5·1 answer
  • PLS HELP ASAP 50 POINTS<br><br> The two main factors keep a planet in motion are what and what?
    5·2 answers
  • How might the molecules inside an ice pack be different from the liquid inside of an insulated cup?​
    5·1 answer
  • What is light and how is it made?​
    15·2 answers
  • 15) The average human is ~60% water, which translates to ~44.3 kg of water. If you eat a Reece's peanut butter cup (105 Calories
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!