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4 years ago

please help

Chemistry

2 answers:

mojhsa [17]4 years ago

5 0

Answer:

What was the verdict?

Explanation:

Tatiana [17]4 years ago

4 0

Answer:

We Can deduce terrestrial and gaseous planets with varying acceleration due to gravity.

Explanation:

Looking at the chart, what seems to be is 7 planets whos acceleration due to gravity intern's of m/s is given. In which Mercury the fastest spinning planet has an acceleration velocity of 3.7 similar to that of mars that is the lowest in all of them.

Saturn and Neptune being gas giants are having a similar mass of 11.0 (m/s) due to there magnetic cores and heavy and dense gases of helium and hydrogen atoms.

Others like the venus and Uranus and Jupiter have varying acceleration as Jupiter is the second densest gaseous planet having layers of atmospheric turbulence and thus having 25.9 m/s square acceleration. While all the top three planets are terrestrial and rest four are gaseous giants. Lacking rocky structure but having extreme atmospheric motion.

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Ca+HCI—>CaCI2+H2, what is the reaction?

arsen [322]

Answer:

single replacement reaction

Explanation:

This is a kind of single replacement reaction where you switch either cations or anions. Here you switched Ca for H and produced Cacl2 and H2 gas by itself.

4 0

4 years ago

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I need help badly<br> what is the individual element that make up HCI

maxonik [38]

Answer:

It is two elements, Hydrogen and Chlorine

Explanation:

Hydrochloric Acid is made with 1 hydrogen atom and 1 chlorine atom bonded with a single covalent bond

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3 years ago

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KonstantinChe [14]

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2Na + Cl2 ------> 2NaCl

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3 years ago

Archer is a soil scientist and needs to examine a bacteria sample. He wants to be able to change his magnification with differen

koban [17]

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3 0

3 years ago

How many liters of hydrogen gas will be produced at STP from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phos

Alexeev081 [22]

Answer: The volume of hydrogen gas produced will be, 12.4 L

Explanation : Given,

Mass of $H_3PO_4$ = 54.219 g

Number of atoms of $Mg$ = $7.179\times 10^{23}$

Molar mass of $H_3PO_4$ = 98 g/mol

First we have to calculate the moles of $H_3PO_4$ and $Mg$ .

$\text{Moles of }H_3PO_4=\frac{\text{Given mass }H_3PO_4}{\text{Molar mass }H_3PO_4}$

$\text{Moles of }H_3PO_4=\frac{54.219g}{98g/mol}=0.553mol$

and,

$\text{Moles of }Mg=\frac{7.179\times 10^{23}}{6.022\times 10^{23}}=1.19mol$

Now we have to calculate the limiting and excess reagent.

The balanced chemical equation is:

$3Mg+2H_3PO_4\rightarrow Mg(PO_4)_2+3H_2$

From the balanced reaction we conclude that

As, 3 mole of $Mg$ react with 2 mole of $H_3PO_4$

So, 0.553 moles of $Mg$ react with $\frac{2}{3}\times 0.553=0.369$ moles of $H_3PO_4$

From this we conclude that, $H_3PO_4$ is an excess reagent because the given moles are greater than the required moles and $Mg$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $H_2$

From the reaction, we conclude that

As, 3 mole of $Mg$ react to give 3 mole of $H_2$

So, 0.553 mole of $Mg$ react to give 0.553 mole of $H_2$

Now we have to calculate the volume of $H_2$ gas at STP.

As we know that, 1 mole of substance occupies 22.4 L volume of gas.

As, 1 mole of hydrogen gas occupies 22.4 L volume of hydrogen gas

So, 0.553 mole of hydrogen gas occupies $0.553\times 22.4=12.4L$ volume of hydrogen gas

Therefore, the volume of hydrogen gas produced will be, 12.4 L

4 0

3 years ago

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