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3 years ago

What is the density of an object with a volume of 20cm cubed and a mass of 40g?

1 answer:

3 0

The density of this object would be 2. It would be two because to find density you have to do mass divided by volume. So 40g divided by 20 cubed cm = 2g/cm cubed

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Una solución formada por 58 gramos de cloruro de sodio (NaCl) en 100 mL de solución posee una concentración

masya89 [10]

Answer:

Explanation:

8 0

3 years ago

What is the product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite?

Archy [21]

<h3>OXIDATION REACTION</h3>

==============================

$\large \sf \underline{Question:}$

What is the product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite?

==============================

$\large \sf \underline{Answer:}$

$\qquad \qquad \huge \bold{Ketone}$

==============================

$\large \sf \underline{Explanation:}$

The product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite is called ketone.

==============================

3 0

1 year ago

The law of conversion states that mass is never created or destroyed. Explain how this law requires all chemical equations to be

ikadub [295]

Answer:

See Explanation

Explanation:

The Law of Conservation of Matter as applied to chemical reactions says that matter is neither created nor distroyed, only changed in form. This implies that the mass of substances going into a reaction process must equal the mass of products generated during the reaction process.

Empirically,

∑ mass reactants = ∑ mass products

One can test this idea after balancing a chemical equation by determining the sum of formula weights of reactants and products; then compare. If reaction was properly balanced, the total mass reactants = total mass of products.

Example:

Combustion of Methane => CH₄(g) + 2O₂(g) => CO₂(g) + 2H₂O(l)

Equation Weights => 16amu + 64amu <=> 44amu + 36amu

Mass Reactants = Mass Products => 80amu <=> 80amu.

__________________

*amu = atomic mass units => sum of atomic weights of elements

3 0

3 years ago

Consider the reaction PCl5(g) ⇌ PCl3(g) + Cl2(g). If 0.02 moles of PCl5, 0.04 moles of PCl3, and 0.08 moles of Cl2 are combined

Furkat [3]

Answer:

The reaction quotient (Q) before the reaction is 0.32

Explanation:

Being the reaction:

aA + bB ⇔ cC + dD

$Q=\frac{[C]^{c} *[D]^{d} }{[A]^{a}*[B]^{b} }$

where Q is the so-called reaction quotient and the concentrations expressed in it are not those of the equilibrium but those of the different reagents and products at a certain instant of the reaction.

The concentration will be calculated by:

$Concentration=\frac{number of moles of solute}{Volume}$

You know the reaction:

PCl₅ (g) ⇌ PCl₃(g) + Cl₂(g).

So:

$Q=\frac{[PCl_{3} ] *[Cl_{2} ] }{[PCl_{5} ]}$

The concentrations are:

[PCl₃]= $\frac{0.04 moles}{0.5 L} =0.08 \frac{moles}{L}$

[Cl₂]= $\frac{0.08 moles}{0.5 L} =0.16 \frac{moles}{L}$

[PCl₅]= $\frac{0.02 moles}{0.5 L} =0.04 \frac{moles}{L}$

Replacing:

$Q=\frac{0.08*0.16}{0.04}$

Solving:

Q= 0.32

<u><em>The reaction quotient (Q) before the reaction is 0.32</em></u>

4 0

2 years ago

In the reaction C5H8+____ O2= 8H2O+5CO2

Romashka-Z-Leto [24]

I don't think that the whole question is posted here, but if you are looking for a way to balance this equation, I may have the answer. I believe the balanced equation is C5H8+9O2=4H2O+5CO2. If you need the reaction type, the answer is combustion. Hope this helps you.

7 0

3 years ago