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aev [14]
3 years ago
7

A piece of metal has a mass of 500 g and a volume of 5 cm3. What is its specific gravity?

Chemistry
1 answer:
Vadim26 [7]3 years ago
3 0
I believe the answer is 100. Hope this helps. (ノ◕ヮ◕)ノ*:・゚✧
density = mass/volume.

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The empirical formula of a hydrocarbon (compound that contains only C and H is found to be CH. laboratory procedures have found
gulaghasi [49]

Answer:

C₆H₆

Explanation:

Molar mass of the compound is 78g/mol

Unknown:

Molecular formula of the compound  = ?

Solution:

The empirical formula of the compound is CH.

Empirical formula is the simplest formula of a compound.

To solve this problem:

 Find the molar mass of CH;

       Molar mass = 12 + 1  = 13g/mol

Multiplication index  = \frac{78}{13}    = 6

So;

              (CH)₆  ;

 Therefore:

               C₆H₆

6 0
3 years ago
When the law of conservation of energy is applied to heat, it is known as the _____ law of thermodynamics. a) zeroth b) first c)
Alex_Xolod [135]

Answer:

b     first

Explanation:

first law of thermodynamics: energy can neither be created or destroyed; however, when heat is added to a system, energy can be changed from one form to another.

3 0
3 years ago
Read 2 more answers
The amount of 4.4 g of substance X is reported to be 0.1<br> mol. What is its molar mass?
anastassius [24]

Answer: 44

Explanation:Please see attachment for explanation.

8 0
3 years ago
Of the elements Fe, Hg, U, Te, and Y, which is considered a Group A element?
serg [7]

Answer:

Te is considered a Group A element.

Explanation:

Fe, Hg and Y belong to Group B.

U is a transition element.

<em>Te is the only element that belong to Group A.</em>

I hope I've solved your doubt.

5 0
3 years ago
When the temperature of a sample of pure water is raised above 25 °C,(1)the hydronium ion concentration will be greater than the
Ludmilka [50]

Answer:

The correct answer is option 3.

Explanation:

H_2O\rightleftharpoons H^++OH^-

The expression of K_w is given by :

K_w=[H^+][OH^-]

K_w\propto [H^+]

K_w\propto [OH^-]

Rise in temperature will result in more dissociation of water molecules into hydrogen ions and hydroxide ions.

With an increase in concentration of hydrogen ions and hydroxide ions value of K_w will also increase.

5 0
3 years ago
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