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rewona [7]
3 years ago
11

A rock dropped Into a glass of water ralses the water level

Chemistry
1 answer:
asambeis [7]3 years ago
7 0

Answer:

You can infert that it has a mass of 40 grams.It also has desnity of 40 grams per millilieter.

Explanation:

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Helllppppppppp Don’t Guess
ruslelena [56]

Answer:

C. Lithium

Explanation:

I Goo gled it and I think that's right.

3 0
3 years ago
What is the chemical formula for Salt and hydrogen gas?
marshall27 [118]
Salt: NaCl
Hydrogen gas: H2
3 0
2 years ago
I have 50.00 mL of 0.100 M ethyl amine (C2H5NH2). I gradually add a solution of 0.025 M nitric acid (HNO3) to the ethyl amine so
sergeinik [125]

Answer:

4.00 is the pH of the mixture

Explanation:

The ethyl amine reacts with HNO3 as follows:

C2H5NH2 + HNO3 → C2H5NH3⁺ + NO3⁻

To solve this question we need to find the moles of ethyl amine and the moles of HNO3:

<em>Moles C2H5NH2:</em>

0.0500L * (0.100mol/L) = 0.00500 moles ethyl amine

<em>Moles HNO3:</em>

0.201L * (0.025mol/L) = 0.005025 moles HNO3

That means HNO3 is in excess. The moles in excess are:

0.005025 moles HNO3 - 0.00500 moles ethyl amine =

2.5x10⁻⁵ moles HNO₃

In 50 + 201mL = 251mL = 0.251L:

2.5x10⁻⁵ moles HNO₃ / 0.251L = 9.96x10⁻⁵M = [H+]

As pH = -log [H+]

pH = -log 9.96x10⁻⁵M

pH = 4.00 is the pH of the mixture

6 0
2 years ago
im found only in plant cells im as green as can be i make food for the plant using the suns energy what am i?
Cloud [144]

im found only in plant cells im as green as can be i make food for the plant using the suns energy what am i?

ANS:-Chloroplast

7 0
3 years ago
Read 2 more answers
Shani poses as the Statue of Liberty for an art class. She holds a torch above her head with her right hand and a book against h
uysha [10]

Answer:

She did no work while she posed because she did not move the torch or the book.

Explanation:

6 0
2 years ago
Read 2 more answers
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