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Katen [24]
3 years ago
13

HELP WITH MY HOMEWORK! WILL PICK BRAINLIEST!

Mathematics
1 answer:
Reptile [31]3 years ago
4 0

Answer:

If 32g of acid = 2 moles of H+ ions

Then 96g = 96×2/32

= 6moles of hydrogen ions

Number of hydrogen ions present

= 6.023 × 10^23 × 6

= 3.6138 × 10^24 hydrogen ions.

Hope this helps

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(a) A square has a perimeter of 12 cm. What is the length of each side?
myrzilka [38]

Answer:

P = 4 c

12 = 4 c

3 = c

Step-by-step explanation:

Hope this helps.

7 0
2 years ago
I have bots answering some of my questions so if you get the right answer ill give brainliest and you also get some points too :
KonstantinChe [14]

Answer:

ok what's your question

4 0
3 years ago
Evaluate (3)^1/6 × (3)^-2/3
Elan Coil [88]
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7 0
2 years ago
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Prove the following identity :<br>Sin α . Cos α .<br> Tan α =  (1 – Cos<br> α)  (1 + Cos<br> α)
Umnica [9.8K]
Let's work on the left side first. And remember that
the<u> tangent</u> is the same as <u>sin/cos</u>.

sin(a) cos(a) tan(a)

Substitute for the tangent:

[ sin(a) cos(a) ] [ sin(a)/cos(a) ]

Cancel the cos(a) from the top and bottom, and you're left with

[ sin(a) ] . . . . . [ sin(a) ] which is [ <u>sin²(a)</u> ]  That's the <u>left side</u>.

Now, work on the right side:

[ 1 - cos(a) ] [ 1 + cos(a) ]

Multiply that all out, using FOIL:

[ 1 + cos(a) - cos(a) - cos²(a) ]

= [ <u>1 - cos²(a)</u> ] That's the <u>right side</u>.

Do you remember that for any angle, sin²(b) + cos²(b) = 1  ?
Subtract cos²(b) from each side, and you have sin²(b) = 1 - cos²(b) for any angle.

So, on the <u>right side</u>, you could write [ <u>sin²(a)</u> ] .

Now look back about 9 lines, and compare that to the result we got for the <u>left side</u> .

They look quite similar. In fact, they're identical. And so the identity is proven.

Whew !





4 0
3 years ago
Read 2 more answers
sofie and josh made 17 ounces of dough. they used 5/8 of the dough to make a pizza and used the rest to make calzones. what is t
fenix001 [56]
Answer=4.25 ounces or 4 1/4 ounces

17 ounces of dough

Amount used for pizza=17*5/8=10.625ounces

Amount used for calzones=17*3/8=6.375 ounces

amount used for pizza- amount used for calzones=
10.625-6.375=4.25ounces
4 0
3 years ago
Read 2 more answers
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