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REY [17]
3 years ago
9

Write hypothesis about a valcano

Chemistry
1 answer:
Afina-wow [57]3 years ago
6 0

Answer:

My hypothesis of a volcano is that it'll explode when it reaches it's maximum temperature

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The answer is D!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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2 years ago
How many grams of NaF form when .5 mol of HF reacts with excess Na2SiO3?
IgorLugansk [536]

Answer:

5.25g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is shown below:

Na2SiO3 + 8HF → H2SiF6 + 2NaF + 3H2O

From the balanced equation above,

8 moles of HF reacted to produce 2 moles of NaF.

Therefore, 0.5 moles of HF will react to produce = (0.5 x 2)/8 = 0.125 mole of NaF.

Next, we shall convert 0.125 mole of NaF to grams.

This is illustrated below:

Mole of NaF = 0.125 mole

Molar mass of NaF = 23 + 19 = 42g/mol

Mass of NaF =..?

Mass = mole x molar mass

Mass of NaF = 0.125 x 42

Mass of NaF = 5.25g

Therefore, 5.25g of NaF is produced from the reaction.

7 0
2 years ago
Which statement is a scientific conclusion?
dolphi86 [110]

Answer:

C

Explanation:

will silver wires conduct electricity better than copper wires ?

5 0
2 years ago
Help me please!
Vlad1618 [11]

Answer:

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Required number is the vertical coordinate of the intersection point of a line at 60°C with the graph of the KNO₃.

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Which term best describes the role of hydrogen gas in the formation of water molecules?
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