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3 years ago

When nitrogen and tin (Sn4+) form an ionic compound, what is the formula?

Chemistry

1 answer:

Ratling [72]3 years ago

7 0

Nitrogen is N2 and as you've provided tin is Sn4+, the ionic compound is N4Sn3. Hope this helped :)

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How many water molecules are created when 32 grams of oxygen react completely with 4.0 grams of hydrogen?

ch4aika [34]

Answer:

d. 1.2 × 1024

Explanation:

From the equation of reaction

2H2 + O2= 2H2O

i.e 2mole(4g) of hydrogen requires 1 mole(32g) of oxygen to produce 2mole (2×6.02×10^23 molecules) of H2O= 1.2×20^24 molcules of water.

NB: 1 mole of H2O contains 6.02×10^23 molecules of H2O

3 0

3 years ago

Consider the following intermediate chemical equations.

QveST [7]

Answer: 250 kJ

Explanation: According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to Hess’s law, the chemical equation can be treated as algebraic expressions and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

$P_4(s)+6Cl_2\rightarrow 4PCl_3$ $\Delta H_1=-2439kJ$ (1)

$4PCl_5(g)\rightarrow P_4(s)+10Cl_2(g)$ $\Delta H_2=3438kJ$ (2)

Net chemical equation:

$PCl_5(g)\rightarrow PCl_3(g)+Cl_2(g)$ $\Delta H=?$ (3)

Adding 1 and 2 we get,

$4PCl_5(g)\rightarrow 4PCl_3(g)+4Cl_2$ $\Delta H_3=\Delta H_1+\Delta H_2=-2439+3438=1000kJ$ (4)

Now dividing equation (4) by 4, we get

$PCl_5(g)\rightarrow PCl_3(g)+Cl_2$

$\Delta H=\frac{\Delta H_3}{4}=\frac{1000kJ}{4}=250kJ$ (4)

8 0

3 years ago

A(n) ________ is a group of atoms that determines many of the properties of an organic molecule.

Leno4ka [110]

A functional group is a group of atoms that determines many of the properties of an organic molecule.
For example functional group for alcohol is hydroxyl group (-OH) and for carboxylic acid is carboxyl group (-COOH).
Alpha carbon is the first carbon atom after the carbon that attaches to the functional group.

4 0

3 years ago

How many grams are in 3.4 moles of Sulfur

OLEGan [10]

Answer:

109.02 grams

Explanation:

Multiply the molar mass of sulfur by the moles: 3.4 * 32.065 = 109.02 grams

6 0

3 years ago

Based on the chemical equation, use the drop down menu to choose the coefficients that will balance the chemical equation:

GREYUIT [131]

The answers would be 3 and 2 so the subscripts would both equal 6.

5 0

3 years ago

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