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2 years ago

Two particles with the same charger will always____each other when brought close together

Chemistry

2 answers:

Anni [7]2 years ago

8 0

If two particles have the same charge they will repel each other when brought close together.

Sphinxa [80]2 years ago

8 0

When two particles with that same charger will repel when brought close together

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What is the change in enthalpy in kilojoules when 3.24 g of CH3OH is completely reacted according to the following reaction 2 CH

vodka [1.7K]

Answer:

12.78 kJ

Explanation:

The correct balanced reaction would be

$2CH_3OH\rightarrow 2CH_4+O_2\Delta H=252.8\ \text{kJ}$

Mass of methanol = $3.24\ \text{g}$

Moles of methanol can be obtained by dividing the mass of methanol with its molar mass $(32.04\ \text{g/mol})$

$\dfrac{3.24}{32.04}=0.10112\ \text{moles}$

Enthalpy change for the number of moles is given by

$\dfrac{\text{Number of moles of methanol in the reaction}}{\text{Enthalpy change in the reaction}}=\dfrac{\text{Number of moles in 3.24 g of methanol}}{\text{Enthaply in change in the mass of methanol}}$

$\\\Rightarrow\dfrac{2}{252.8}=\dfrac{0.10112}{\Delta H}\\\Rightarrow \Delta H=\dfrac{0.10112\times 252.8}{2}\\\Rightarrow \Delta H=12.781568\approx 12.78\ \text{kJ}$

The change in enthalpy is 12.78 kJ.

5 0

3 years ago

Your town is experiencing a drought in which the weather has been hot and dry for weeks. Infer which type of pressure system is

Ivahew [28]

The system which leads to drought is high pressure system.

<h3>What is drought?</h3>

Drought refers to a situation in which there is no precipitation in an area over a long period of time. It usually results is unusually hot and dry for several weeks.

This condition of drought is usually caused by a high pressure system which leads to the drought.

Learn more about drought: brainly.com/question/2791517

5 0

2 years ago

Given that the concentration of myosin is 25pmol·L−1 and Rmax(Vmax)=208pmol·L−1·s−1 , determine the turnover number of the enzym

DedPeter [7]

Answer:

8.32 s⁻¹

Explanation:

Given that:

The concentration of myosin = 25 pmol/L

R_max = 208 pmol/L/s

The objective is to determine the turnover number of the enzyme molecule myosin, which has a single active site.

In a single active site of enzyme is known to be a region where there is binding of between substrate molecules, thereafter undergoing chemical reaction.

The turnover number of the enzyme is said to be the number of these substrate molecule which binds together are being converted into products.

The turnover number of the enzyme molecule of myosin can be calculated by the expression: $\dfrac{R_{max}}{concentration}$

⇒ $\dfrac{208 pmol/L/s}{25 pmol/L}$

= 8.32 s⁻¹

4 0

3 years ago

What kind of mixture is a solution? A suspension? A colloid?

kompoz [17]

Solution = homogeneous mixture
Suspension = heterogeneous mixture
Colloid = homogeneous mixure

3 0

2 years ago

If 3 g of element C combine with 8 g of element D to form compound CD, how many grams of D are needed to form compound CD2?

bija089 [108]

<span>For the answer to the question above,
If 3g of element combines with 8g of D to form CD it means
1 mole of C = 3g
1 mole of D = 8g
hence it forms CD.
So to form CD2 you need 16g of element D
I hope my answer helped you</span>

8 0

3 years ago