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bazaltina [42]
2 years ago
9

What do you think the elements that are in the same group or period on the periodic table have in common?

Chemistry
1 answer:
schepotkina [342]2 years ago
7 0

chemical properties and same number of shell

Explanation:

elements in the same group have the same number of eletrons in their outermost shell and hence have the same chemical properties

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PLEASE HELP FAST! When 23.3 g of O2 reacts with 18.3 g C10H8, what is the limiting reactant. The equation is C10H8 + 12O2 -->
Murljashka [212]

O₂ is the limiting reagent.

<h2>What is a limiting reactant?</h2>

A limiting reactant is described as the one that will be consumed first in a chemical reaction.

<h3>Calculation</h3>

C₁₀H₈ + 12O₂ → 10CO₂ + 4H₂O

Given, Mass of O₂ = 23.3 g

           Mass of C₁₀H₈ = 18.3 g

Molar mass of O₂ = 32 g

No. of moles of O₂ = 32/23.3 = 1.4 moles

Molar mass of C₁₀H₈ = 128 g

No. of moles of C₁₀H₈ = 128/18.3 = 6.9 = 7 moles

According to the equation,

1 mole of C₁₀H₈ yields 10 moles of CO₂. So, 7 moles of C₁₀H₈, give 70 moles of CO₂.

12 moles of O₂ yields 10 moles of CO₂. So, 1.4 moles of O₂ give 1.16 moles of CO₂.

We do know, however, that based on our balanced equation, if we were to totally react all 1.4 moles of O2, we could only produce a maximum of 1.16 moles of CO2. Even while there is enough C10H8 to generate more, the amount of O2 we have is a limiting factor because it will be consumed first.

So, our limiting reactant is O₂.

Learn more about limiting reagents here:

brainly.com/question/11848702

#SPJ2

7 0
2 years ago
Read 2 more answers
Which statement is true regarding methane and ammonia?
sukhopar [10]
The options for given question are as follow,

1) Methane molecules show hydrogen bonding. 
<span>2) Ammonia molecules show hydrogen bonding. </span>
<span>3) Methane has stronger hydrogen bonding than ammonia. </span>
<span>4) Both the compounds do not show hydrogen bonding. </span>
<span>5) Both the compounds have strong hydrogen bonding.
</span>
Answer:
            Correct answer is Option-2 (Ammonia molecules show hydrogen bonding).

Explanation:
                   Hydrogen bond interactions are formed when a partial positive hydrogen atom attached to most electronegative atom of one molecule interacts with the partial negative most electronegative element of another molecule. So, in Ammonia hydrogen gets partial positive charge as nitrogen is highly electronegative. While the C-H bond in Methane is non-polar and fails to form hydrogen bond interactions.
6 0
4 years ago
Read 2 more answers
Which of the following methods can be used to completely separate a solution containing alcohol and water?
SOVA2 [1]

Answer:

evaporation and distillation

Explanation:

the liquids have different booking points that is why it works

6 0
3 years ago
Read 2 more answers
Explain which of the following are correct statements of the Second Law of Thermodynamics and which are not. a. All reversible h
Ivan

Answer:

a. False

b. False

c. True

d. False

Explanation:

The Second Law of Thermodynamics (2LT) has two principal states, one about the heat engines, and other about the entropy.

Heat engines are machines that work by converting heat at work. According to the 2LT, a machine like that can't convert all of the heat in work, some of it must be lost by the surroundings.

Thus, those machines, which is cyclic, can't have an efficiency of 100%, but, depending on the temperature, and the fluid used, it will vary, so, the letter "a" is false.

The engine must be connected to a hot heat reservoir, which will be a high temperature and will warm up the fluid, and to a cold heat reservoir, which will a low temperature and will be the deposit of the heat loss. So, the letter "b" is incorrect, and the letter "c" is correct.

According to the other statement of the 2LT, the entropy, a measure of the randomness, intends to increase in all of the systems, including the universe. So, as more unorganized is a system, as large as the entropy. So, the letter "d" is incorrect.

3 0
3 years ago
What do we call temperature changes caused by changes in air pressure?
LekaFEV [45]

Answer:

Fronts

Explanation:

For example, there are hot and cold fronts which cause the air to become warmer or cooler in a specific region!

<em>Hope this helps! Please mark as brainiest!</em>

7 0
3 years ago
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