How many atoms of calcium are in a unit of calcium phosphate whose formula is Ca3(PO4)2?A) one C) three

B) two D) four

Answers

Answer 1

Answer: The correct answer is answer choice C, three. In the formula Ca3 (P O4)2, there are 3 atoms of calcium (Ca), 2 atoms of phosphorus (P), and 8 atoms of oxygen (O). You can tell this by looking at the subscripts (or numbers, in this case, since you can't type subscripts). The subscript applies to the number directly beside it. Furthermore, if you have parentheses with a number beside it, just distribute. In this problem, we have (P O4)2.

(P O4) 2 Given
P2 O8 Distribute
We now have 2 atoms of phosphorus and 8 atoms of oxygen.

This problem has decided to be nice and just ask for calcium, so we don't have to distribute. All you have to do for this problem is look at the subscript beside Ca, which is 3. Therefore, the correct answer is C.

Answer 2

Answer:

Answer: c

Explanation:brainliest

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64g of sulfur dioxide (SO2) contains 32g of oxygen. Calculate how much sulfur it contains?

Answers

mass of SO2 = mass of sulfur+ mass of oxygen
⇒ 64 g= mass of sulfur+ 32 g
⇒ mass of sulfur= 64 g-32 g
⇒ mass of sulfur= 32 g.

There is 32 g of sulfur in 64 g of SO2~

What is the [H30+) in a solution with (OH'] = 2.0 x 10-3 m?2.0 x 10-3M
5.0 x 10-11M
2.0 x 10-12M
5.0 x 10-12 M
1.0 10-12 M

Answers

Answer: 5.0 x 10-12 M

Explanation:

It is well known that; pH + pOH = 14.

pOH = - log [ OH-]

= - log [ 2.0 x 10 ∧-3]

= 3 - log 2

= 3 - 0.301 = 2.7 approximately.

recall that, pH + pOH = 14, therefore; pH = 14 - 2.7 = 11.3

pH= - log [ H3O+]

11.3 = - log [H3O+], take the antilog of 11.3, gives us;

[H3O+] = antilog of - 11.3, which gives 5.0 x 10-12 M

Please tell if this right!if not please answer with correct answers

Answers

Yes I’m. 80% sure that it’s right

Answer:

Yes, you are correct

Explanation:

Nice job :)

The look and feel of a rocks surface is its what

Answers

It's the Texture of the rock!

the answer is texture :):):):):):):):):):):):):)

What should be the effect of losing ones sight on the ability to digest food

Answers

One mechanism is enzyme induction.

Enzymes are proteins, which are metabolically expensive to produce. It makes evolutionary sense that your body makes less digestive enzymes such as lactase and sucrase when they're not needed. If your diet changes, your body can gradually increase the production of some enzymes through a process of enzyme induction.

For example, the production of lactase enzyme can be increased in some lactose-intolerant individuals by feeding them lactose . Also, studies in rats have shown that other carbohydrate-digestiYour body makes more of what it needs, and less of what it doesn't need--brilliant!ng enzymes, such as sucrase-isomaltase, trehalase, and maltase-glucoamylase--can be induced by hydrocortisone administration.

Zebra mussels have no???