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elena55 [62]
3 years ago
9

Which of the following showing the Law of Conservation of Mass?

Chemistry
2 answers:
Stells [14]3 years ago
7 0
The only one I know for sure is Mass is always conserved In a Chemical reaction.
sattari [20]3 years ago
6 0

Answer:

I'm pretty sure mass is always conserved during a chemical reaction.

Explanation:

Sorry for not answering the whole question.

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Given the reactant side of the total ionic equation for the neutralization reaction of lithium hydroxide (LiOH) with hydrochlori
Sunny_sXe [5.5K]
<span>Answer:
</span><span>
</span><span>
</span><span>Li⁺ (aq) + OH⁻ (aq) + H⁺ (aq) + Cl⁻(aq) → Li⁺ (aq) + Cl⁻ (aq) + H₂O(l)</span><span />

<span>Explanation:
</span>

<span>1) Combine the cation Li⁺ (aq) with the anion Cl- (aq) to form LiCl(s).
</span>
<span>LiCl is a solid soluble substance, a typical ionic compound. So, it will reamain as separate ions in the product side: Li⁺ + CL⁻</span>

<span>2) Combine the anion OH⁻ with the cation H⁺ to form H₂O(l).
</span>
<span>Since, the ionization of H₂O is low, it will remain as liquid in the product side: H₂O(l)</span>

<span>3) Finally, you can wirte the total ionic equation:
</span>
Li⁺ (aq) + OH⁻ (aq) + H⁺ (aq) + Cl⁻(aq) → Li⁺ (aq) + Cl⁻ (aq) + H₂O(l)



8 0
3 years ago
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 15.6 g of carbon were burned in the presence of
NeX [460]

Answer: 5.72 g mass of carbon dioxide was produced

Explanation:

C+O_2\rightarrow CO_2

Moles of C =\frac{\text{mass of carbon}}{\text{molar mass of carbon}}=\frac{15.6 g}{12 g/mol}=1.3 moles

Mass of O_2 reacted = 59.1 g - 17.5 g = 41.6 g

Moles of O_2\text{ reacted}=\frac{\text{mass of}O_2}{\text{molar mass of}O_2}=\frac{41.6 g}{32 g/mol}=1.3 moles

According to reaction 1 mole O_2 produces 1 mole of CO_2 then 1.3 mole of O_2 will produce \frac{1}{1}\times 1.3 moles of CO_2

Mass of CO_2:

=Moles of CO_2 × molar mass ofCO_2 = 1.3 ×44 g/mol =

=57.2 grams

5.72 g mass of carbon dioxide was produced

7 0
3 years ago
A student used a 10 ml volumetric pipet to measure and deliver an unknown liquid to a flask for density determination. the stude
andrew-mc [135]
The answer is
TOO LOW
4 0
3 years ago
What is the approximate rate of plate movement
RUDIKE [14]
In the north Atlantic the movement of tectonic plates(if that is what you meant by plates) is around.4 inches per year which is almost 1 cm but in the pacific area the movement is almost 2 inches which is more that four cm every year although some people say that they (in general not specific to any place in particular) travel in the range of 5-10 centimeters every year.
7 0
3 years ago
How many moles of gaseous boron trifluoride, BF3, are contained in a 4.3410 L bulb at 788.0 K if the pressure is 1.220 atm What
gregori [183]

Answer:

n= 0.08186

{He}2s^2 2p^6

Explanation:

PV=nRT

n=PV/RT

n= (1.220 atm)(4.3410 L) / (0.0821 atm*L/mol*K)(788.0 K)

n=0.08186

As for the electron configuration:

Ne:

{He} 2s^2 2p^6

or long hang:

1s^2 2s^2 2p^6

5 0
3 years ago
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