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
Paladinen [302]
4 years ago
15

Strontium phosphate, Sr3(PO4)2, is a crystalline substance used in medicine and industry. How many phosphorus atoms are represen

ted in the formula for Sr3(PO4)2? a) 2b) 3c) 4d) 8
Chemistry
1 answer:
dexar [7]4 years ago
7 0

Answer: option A. 2

Explanation: in the formula Sr3(PO4)2, the 2 behind (PO4) is affecting both P and O4. It means that we have P2 in the formula

You might be interested in
Suppose you are a food chemist working for a company that makes and manufactures soda. Your job is to create a new soft drink wi
Mekhanik [1.2K]

Answer:

The answer to your question is given after the questions so I just explain how to get it.

Explanation:

a)

Get the molecular weight of Phosphoric acid

        H₃PO₄ =  (3 x 1) + (31 x 1) + (16 x 4)

                    = 3 + 31 + 64

                    = 98 g

         98 g -----------------  1 mol

      0.045 g ---------------   x

          x = (0.045 x 1) / 98

          x = 0.045 / 98

          x = 0.00046 moles or 4.6 x 10 ⁻⁴

b)

Molarity = \frac{moles}{volume}

Molarity = \frac{0.00046}{0.35}

Molarity = 0.0013 or 1.31 x 10⁻³

c)

Formula            C₁V₁ = C₂V₂

                              V₁ = C₂V₂ / C₁

Substitution

                              V₁ = (0.0013)(1) / 0.01

Simplification and result

                              V₁ = 0.0013 / 0.1

                              V₁ = 0.13 l = 130 ml            

7 0
3 years ago
As the sun heats the surface of the oceans, two layers of water result. What separates the layers?
Basile [38]

Answer:

Thermocline separate these two layers.

Explanation:

Ocean consist of three major layers on the basis of temperature.

1. Upper layer

2. Deep layer

3. Thermocline

Upper layer:

The first layer is called upper layer which is present on the surface and directly expose to the sun. The sun heat up this upper layer easily and warm it.

Deep layer

The deep layer is present below the thermocline. It is present in deep where sunlight can not approach to it and its temperature remain low.

Thermocline

It is the middle layer, present between the upper and deep layer. It separated the upper layer from deep layer. Its upper portion is warmer while lower is colder.

4 0
3 years ago
Does anyone understand this?
Nikolay [14]
From start:

Joule, J, calorie, 

Example 1: 120 J / 4.184 = 28.68 cal
Example 2: 1200 cal * 4.184 = 5020.8 J
7 0
4 years ago
WE NAME BRAINLIEST PLZZ HELP
Wittaler [7]

Answer:

The answer is a I think

Explanation:

I think this because it has all of the shapes that are included in the other ones

4 0
3 years ago
What type of Star is this?
Alex17521 [72]

Answer:

#3

Explanation:

not sure but it's close to 5,100

6 0
3 years ago
Other questions:
  • How many formula units make up 30.4 g of magnesium chloride (mgcl2)?
    7·2 answers
  • A sample of C3H8 has 8.08 × 1024 H atoms.
    9·2 answers
  • 4. How many minutes are there in 1.000 week?<br> please help
    9·2 answers
  • Select the common uses of radioactive elements in health care.
    11·2 answers
  • What method do water buffalo use to fight the lions
    7·1 answer
  • What is the force of gravity acting on an object? (3 points)
    13·1 answer
  • Which one from the drop down box
    7·1 answer
  • What is the role of plate tectonics in the rock cycle?
    5·1 answer
  • Fe + O2 --&gt; FeO (unbalanced). How many mLs of O2 are needed to react with 18.0 g of Fe ? *​
    8·1 answer
  • A 0.250 L solution is made with 1.60 g of glucose, in water at 25.00∘C. What is the osmotic pressure of the solution?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!