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n200080 [17]
3 years ago
7

I need help with this problem

Chemistry
1 answer:
sladkih [1.3K]3 years ago
6 0

Answer:

Theory

Explanation: is an idea or supposition in regards to a situation

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If 3.00 g of aluminum hydroxide reacts with 1.40 g of sulfuric acid, what is the mass of water produced?
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The Law of Conservation of Mass states that matter is not created nor destroyed.

Based on this, we can use some addition to find the answer.

3.00 + 1.40 = 4.40 g

Hope this helps :)
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PLEASE ANSWER NOW!!!!! WILL GIVE BRAINLIEST!!!
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One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal
kenny6666 [7]

Answer:

Lithium oxide, Li₂O.  

Explanation:

Hello!  

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

M_2O+H_2\rightarrow 2M+H_2O  

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

5.00gM_2O*\frac{1molM_2O}{(2*X+16)gM_2O}*\frac{2molM}{1molM_2O}*\frac{XgM}{1molM}=2.32gM  

Thus, we perform the operations in order to obtain:

\frac{10X}{(2X+16)}=2.32  

So we solve for x as shown below:

10X=2.32(2X+16)\\\\10X=4.64X+37.12\\\\X=\frac{37.12}{10-4.64}\\\\X= 6.93g/mol  

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.  

Best regards!

8 0
2 years ago
What is heat of vaporization?
kirza4 [7]

B. It is the heat required to change a gram of substance from solid to liquid

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katrin [286]

Answer:

C. glaciers

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Glaciers are a part of the hydrosphere

The hydrosphere is the amount of water on the earth. It includes water in the different states found on the earth surface and within the subsurface. Water does exists as solids, liquids and in vapor form on earth.

  • Glacier is the solid form of water on the earth crust.
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  • Most glaciers are found around the polar regions and high altitude zones on the earth.
  • It is an important source of fresh water for the ecosystem
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3 years ago
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