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3 years ago

How many atoms of phosphorus are in 3.30 mol of copper(II) phosphate?

Chemistry

2 answers:

otez555 [7]3 years ago

6 0

Hmgmcbfbhuhhvvvuuuuuuuuuh

rjkz [21]3 years ago

3 0

Answer:

3.97x10^24

Explanation:

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HELP MEEEE FINALS THIS WEEK!!! I’ve gotten those so far I just need the other ones!!

PilotLPTM [1.2K]

Answer:

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Explanation:

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2 years ago

Based on its position in the periodic table, the element sulfur would be expected to have how many valence electrons? A: 4 B: 6

ExtremeBDS [4]

C. 6 Valence electrons. Remember that the family that they are in will determine the number of valence electrons that element will have. Sulfur is in family 16 so it will have 6 Valence electrons.

8 0

3 years ago

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90 POINTSSSS!!!

Katarina [22]

Answer:

$\large \boxed{\text{-2043.96 kJ/mol}}$

Explanation:

Assume the reaction is the combustion of propane.

Word equation: propane plus oxygen produces carbon dioxide and water

Chemical eqn: C₃H₈(g) + O₂(g) ⟶ CO₂(g) + H₂O(g)

Balanced eqn: C₃H₈(g) + 5O₂(g) ⟶ 3CO₂(g) + 4H₂O(g)

(a) Table of enthalpies of formation of reactants and products

$\begin{array}{cc}\textbf{Substance} & \textbf{$\Delta_{\text{f}}$H/(kJ/mol}) \\\text{C$_{3}$H$_{8}$(g)} & -103.85 \\\text{O}_{2}\text{(g)} & 0 \\\text{CO}_{2}\text{(g)} & -393.51 \\\text{H$_{2}$O(g)} & -241.82\\\end{array}$

(b)Total enthalpies of reactants and products

$\Delta_{\text{rxn}}H^{\circ} = \sum \left( \Delta_{\text{f}} H^{\circ} \text{products}\right) - \sum \left (\Delta_{\text{f}}H^{\circ} \text{reactants} \right)\\= \text{-2147.81 kJ/mol - (-103.85 kJ/mol)}\\= \text{-2147.81 kJ/mol + 103.85 kJ/mol}\\= \textbf{-2043.96 kJ/mol}\\\text{The enthalpy change is $\large \boxed{\textbf{-2043.96 kJ/mol}}$}$

ΔᵣH° is negative, so the reaction is exothermic.

5 0

3 years ago

Lpg contains ? (<br> a. methane (<br> b. butane (<br> c. eyhane (<br> d. none of them

disa [49]

Lpg contains ethane,propane,and butane..hope it helps

4 0

4 years ago

Why is there a hole in the ozone layer? What do you think the consequences of that hole are?

Pavel [41]

Answer:

There is a ozone layer because of the special atomphere and chemical conditions that takes place there. I think the consequences of that home area is the very low winter temperatures.

6 0

3 years ago

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