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Brilliant_brown [7]
3 years ago
12

The Law of Conservation of Mass says that mass

Chemistry
2 answers:
ASHA 777 [7]3 years ago
7 0
B Created it destroyed
S_A_V [24]3 years ago
6 0

Answer:

B

Explanation:

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither <u><em>created</em></u> nor <u><em>destroyed</em></u> in chemical reactions. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

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a red box and a blue box are on the same shelf. There is more gravitational potential energy between the red box and Earth than
Anna [14]
Blue box. Gravitational potenti  al energy<span> changes into kinetic </span>energy. The equation for    gravitat ional potential energy<span> is GPE = mgh, where m i   s the mass in kilograms, g is the a   cceleration due to gravity    (9.8 on Earth), and h is the height above the ground in meters</span>
8 0
3 years ago
How many moles of butane do we have if we have 5.50 x 1024 molecules<br> of butane (CH) ?
Dmitry [639]

Answer:

9.14moles

Explanation:

Given parameters:

Number of atoms of butane  = 5.5 x 10²⁴atoms

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.

             6.02 x 10²³ atoms makes up 1 mole of an atom

             5.5 x 10²⁴ atoms will contain = \frac{5.5 x 10^{24} }{6.02 x 10^{23} }  = 9.14moles

7 0
2 years ago
The ratio of chlorine to hydrogen chloride in the reaction
Trava [24]
It is a simple stoichiometry problem. We have been given with balanced equation and 5.00 moles of HCl and have to calculate the moles of H2. 

<span>From the balanced equation it is being clear that 2 moles of HCl are produced by 1 mole of H2. so, 1 mole of HCl will be produced by 1/2 moles of H2. So, the mole ratio of H2 and HCl is 1:2 </span>
<span>to calculate the moles of H2 for the given moles of HCl, multiply the moles of HCl by the mole ratio of H2 and HCl. </span>

<span>5.00 mole HCl x (1 mole H2/ 2 mole HCl) </span>
<span>= 2.50 mole H2 </span>
<span>so, to produce 5.00 moles of HCl, 2.50 moles of H2 are required.</span>
8 0
3 years ago
Chemical properties of matter depend mostly on A. the shape and size of the substance. B. the color of the substance. C. the typ
eimsori [14]

incorrect the answer is

the types of atoms and bonds that a substance contains

8 0
3 years ago
Please help me!! Look at the picture to understand the question please!
Romashka-Z-Leto [24]

Answer:

C. I

Explanation:

The elements are categorized in groups and periods. The periods are horizontal and the groups are vertical. The elements in the same group (vertical) have very similar characteristics.

5 0
2 years ago
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