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
Vanyuwa [196]
3 years ago
12

25 points, pls help

Chemistry
2 answers:
Sav [38]3 years ago
8 0

Answer:

B

Explanation:

Darya [45]3 years ago
5 0

your answer is B my friend


You might be interested in
Aspirin is one of the Aesthetic Values of biodiversity<br><br> true<br> false
Trava [24]

Answer:

true

Explanation:

6 0
2 years ago
How many moles are in 124.7 g of Ba(OH)2
Alekssandra [29.7K]

Answer:

0.73 mol

Explanation:

No. of moles(n)= Given mass/molar mass.

Given mass=124.7g

Molar mass of Ba(OH)2= Molar mass of (Barium+2Oxygen+2Hydrogen)=137+32+2=171g

No. of moles= 124.7g/171g=0.73 mol

7 0
3 years ago
What is the percent by mass of water in Na S04.10H20?
dalvyx [7]

Answer:

                    Percent by mass of water is 56%

Explanation:

                    First of all calculate the mass of hydrated compound as,

Mass of Sodium = Na × 2 = 22.99 × 1 = 45.98 g

Mass of Sulfur = S × 1 = 32.06 × 1 = 32.06 g

Mass of Oxygen = O × 14 = 16 × 14 = 224 g

Mass of Hydrogen = H × 20 = 1.01 × 20 = 20.2 g

Mass of Na₂S0₄.10H₂O = 322.24 g

Secondly, calculate mass of water present in hydrated compound. For this one should look for the coefficient present before H₂O in molecular formula of hydrated compound. In this case the coefficient is 10, so the mass of water is...

Mass of water = 10 × 18.02

Mass of water = 180.2 g

Now, we will apply following formula to find percent of water in hydrated compound,

           %H₂O  =  Mass of H₂O / Mass of Hydrated Compound × 100

Putting values,

                                      %H₂O  = 180.2 g / 322.24 g × 100

                                           %H₂O =  55.92 % ≈ 56%

3 0
3 years ago
A student made the following diagram to represent cellular respiration.
Ratling [72]
The correct answer is A, Water is not used up during this process. This is because when cellular respiration occurs oxygen and glucose combine. When this takes place water is left behind when carbon is separated from glucose. Because water is being left behind it is not being used up in this process. 
3 0
3 years ago
Read 2 more answers
Which of the following is NOT a way that reducing biodiversity directly impacts humans?
Zepler [3.9K]

C. Fewer habitats for wild animals to live in

Explanation:

Biodiversity does not directly impact humans in that there are fewer habitats for wild animals to live in. This is a direct impact on animals and not humans.

Biodiversity is the variation of life forms in an area. It is measured by the ability of the ecosystem to sustain different life forms and keep their interaction with the environment.

It helps to maintain and sustain life.

To humans, reducing biodiversity;

  • reduces the potential of medicine derived from other organisms. When their habitat is lost, we lose them.
  • fewer ecosystems to appreciate for beauty and recreation. It leads to loss of the ecosystem.
  • fewer wild food species for humans to eat.

Loss of habitat directly affects wild animals and not man.

learn more:

Biodiversity hotspots brainly.com/question/10723602

#learnwithBrainly

3 0
3 years ago
Other questions:
  • Which of the following is equal to 0.45 mm3? (B, right?)
    5·1 answer
  • Describe what happens to water particles when ice melts
    6·1 answer
  • When aqueous solutions of ________ are mixed, a precipitate forms.
    10·1 answer
  • What is the difference between an atom of silver and an<br> atom of gold?
    5·2 answers
  • Which organ helps to process essential proteins and minerals, so that they can then be taken through the bloodstream and to the
    9·1 answer
  • help please this is a major grade (my birthday is next week) if i dont pass i wont celebrate my birthday please help!
    8·1 answer
  • Help meeeeeeeee plzzzzzzzzzzzzzzzzzzzz
    11·2 answers
  • Which describes the titration graph when a strong acid is titrated by a weak base?
    5·1 answer
  • Write the name of the branched alkane next to the drawing of the molecule.
    11·1 answer
  • add or subtract the following measurements. be sure each answer you enter contains the correct number of significant digits. −4.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!