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Juli2301 [7.4K]
2 years ago
13

Question 11 of 16 V

Chemistry
1 answer:
user100 [1]2 years ago
4 0

Answer:

A

Explanation:

How many moles of HCI will just react with 0.424 g Ba(OH)2?

A) 4.94 x 10 mol

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The mass of h2 produced by reaction of 1.80 g al and 6.00 g h2so4 is 0.112 g. what is the percent yield?
nydimaria [60]
First, let us write the reaction. We know that the reactants are Aluminum and Sulfuric acid, and one of the products is hydrogen. That means the reaction is a single replacement reaction as shown below:

2 Al + 3 H₂SO₄ = 3 H₂ + Al₂(SO₄)₃

Next, let us determine which of the reactants is limiting:

1.80 g Al (1 mol/26.98 g)(3 mol H₂SO₄/2 mol Al)(98 g H₂SO₄/mol) = 9.807 g

It would need 9.807 g. But the only available amount is 6 g. That means that H₂SO₄ is the limiting reactant. We use 6 g as the basis to know the theoretical yield:

6 g*(1 mol H₂SO₄/98 g)*(3 mol H₂/ 3 mol H₂SO₄)*(2 g /mol H₂) = 0.122 g

Therefore, the percent yield is equal to
Percent yield = (0.112 g/0.122 g)*100
Percent yield = 91.8%
3 0
2 years ago
Does an electric iron may have a lower wattage than a LED lightbulb
grin007 [14]

Answer:

Below:

Explanation:

An iron will use 800 to 2000 watts, with an average iron using 1100 watts when heated on high.

8 0
3 years ago
Compare urban and rural land .how are each used?
Ksivusya [100]

Answer:

"Urban area is used for the buildings, industries etc, whereas the rural areas are used for cultivation, forest cover etc."

Explanation:

When we talk about the urban land they are mostly covered with buildings, industries, roads and apartments and also the municipal structures. But when we talk about the rural land it has less dense population with forest cover, agricultural lands, rangeland and also different land cover type. In the urban areas the population density is very high. Those areas that located in the outskirt of the town are the rural areas.

5 0
2 years ago
A piece of wood has a mass of 36g and measures 3cm X 6cm X 4cm. What is the density of the wood? Would the piece of wood float o
Fudgin [204]

Answer:

Explanation:

The density is  

1.1 g c m 3 .

4 0
3 years ago
Please tell me answers I am given you brainliest ​
Zina [86]

Answer:

1 = one

2 = fluorine

3 = Bromine

4 = increase

5 = first increaseas and then decreases

hope it helps

7 0
3 years ago
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