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kobusy [5.1K]
3 years ago
14

26 POINTS!

Chemistry
2 answers:
lawyer [7]3 years ago
7 0

Answer:I think it’s A.Positive. Not sure though.

Explanation:

Vika [28.1K]3 years ago
4 0

Answer:

positive

Explanation:

i also agree w the other person who answered

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Organisms reproduce by two main methods. One is division, in which the animal divides and creates an exact copy of itself. What
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A client with tongue occlusion has loss of gag reflex and alterations in level of consciousness. The blood gas test shows oxygen
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Answer:

answer is given below

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3 years ago
Use the mass and volume data to calculate the density of mercury to the nearest tenth. Mass of mercury = 57 g Volume of mercury
Elena-2011 [213]

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7 0
4 years ago
Read 2 more answers
Please help with this chemistry question it’s due by midnight
Scilla [17]

Answer:

HF is the limiting reactant

Explanation:

The balanced equation for the reaction is given below:

SiO₂ + 4HF —> SiF₄ + 2H₂O

From the balanced equation above,

1 mole of SiO₂ reacted with 4 moles of HF.

Finally, we shall determine the limiting reactant. This can be obtained as illustrated below:

From the balanced equation above,

1 mole of SiO₂ reacted with 4 moles of HF.

Therefore, 7.5 moles of SiO₂ will react with = 7.5 × 4 = 30 moles of HF.

From the calculation made above, we can see clearly that it will take a higher amount (i.e 30 moles) of HF than what was given from the question (i.e 5 moles) to react completely with 7.5 moles of SiO₂.

Therefore, HF is the limiting reactant and SiO₂ is the excess reactant.

3 0
3 years ago
Water + Heat <br> What is proof of a Chemical Reaction?
Fynjy0 [20]
Its water vapor bro coz the water will turn into vapor
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3 years ago
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