All categories

3 years ago

Sean drew this diagram and labeled an unknown gas as gas A. Which gas does A represent?

Chemistry

2 answers:

Ronch [10]3 years ago

8 0

Answer: choice C) carbon dioxide.

Explanation: The given diagram is showing the gas coming from the house(kitchen), birds and animals.

In kitchens, the fuel is burned to cook the food and a combustion reaction takes place when the fuel is burned. Combustion of hydrocarbon fuels produces water and carbon dioxide gas.

In respiration process, animals inhale oxygen gas and exhale carbon dioxide gas.

So, the gas A in the diagram must be representing carbon dioxide gas and hence the correct choice is option C) carbon dioxide.

ANEK [815]3 years ago

3 0

Gas A is Carbon Dioxide

You might be interested in

My test is tomorrow and I'm confused about how to solve these. pls halp

Stels [109]

Answer:

Explanation:

I don't know 
BCAZ I don't know
And I don't know

5 0

2 years ago

A farmer uses water to irrigate his potato crops. Which roles of water does this examplify

exis [7]

Answer:

This exemplifies the agricultural role of water.

Explanation:

7 0

2 years ago

What is the basic difference between exergonic and endergonic reactions? Group of answer choices Exergonic reactions release ene

alekssr [168]

Answer: the basic difference is Exergonic reactions release energy and an endergonic reactions absorb energy .

HOPE THIS HELPS!!!

3 0

2 years ago

What is the percent composition by mass of sulfur in the compound mgso4

Margaret [11]

Answer:

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

Explanation:

Molar mass of compound = 120 g/mol

Number of sulfur atom = 1

Atomic mass of sulfur = 32 g/mol

Percentage of element in compound :

$=\frac{\text{Number of atoms}\times \text{Atomic mass}}{\text{molar mas of compound}}\times 100$

Sulfur :

$=\frac{1\times 32 g/mol}{120 g/mol}\times 100=26.7\%$

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

6 0

3 years ago

Sort these species into isoelectronic groups. It doesn\'t matter which group goes in which box, so long as the correct species a

OleMash [197]

Answer : The isoelectronic groups are:

$He,Be^{2+},Li^{+}$

$N^{3-},Mg^{2+}$

$S^{2-},Ti^{4+},K^{+}$

Explanation :

Isoelectronic : It is defined as the compound or molecule having the same number of electrons and the same number of electronic structure.

The element is helium. The number of electrons are 2.
The element is beryllium. The number of electrons are 4. The number of electrons in $Be^{2+}$ = 4 - 2 = 2
The element is lithium. The number of electrons are 3. The number of electrons in $Li^{+}$ = 3 - 1 = 2
The element is nitrogen. The number of electrons are 7. The number of electrons in $N^{3-}$ = 7 + 3 = 10
The element is neon. The number of electrons are 10.
The element is sulfur. The number of electrons are 16. The number of electrons in $S^{2-}$ = 16 + 2 = 18
The element is magnesium. The number of electrons are 12. The number of electrons in $Mg^{2+}$ = 12 - 2 = 10
The element is titanium. The number of electrons are 22. The number of electrons in $Ti^{4+}$ = 22 - 4 = 18
The element is potassium. The number of electrons are 19. The number of electrons in $K^{+}$ = 19 - 1 = 18

The isoelectronic groups are:

$He,Be^{2+},Li^{+}$

$N^{3-},Mg^{2+}$

$S^{2-},Ti^{4+},K^{+}$

7 0

2 years ago