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pentagon [3]
4 years ago
12

The hours of darkness in may are most similar to which month?

Chemistry
1 answer:
Zarrin [17]4 years ago
8 0
When the north pole<span> is tilted towards the sun,it experiences continuous day light for six </span>months<span>. It is </span>night<span> for the same period in south </span>pole<span>. Conditions reversed when south </span>pole<span> is tilted towards the sun. That is because the Earth's axis is tilted relative to an imaginary line perpendicular to Earth's orbital plane.</span>
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Which object in the diagram represents earths moon
mash [69]
Answer is number 4.

The above diagram shows a part of our solar system.The planet which is very close to the sun is Mercury. Hence, No.1 is Mercury and 2 and 3 are Venus and Earth respectively. Moon is an astronomical body which orbit planet Earth. Hence moon should be shown near to the planet Earth.
5 0
3 years ago
Write a paragraph explaining the effect of surface area on the rate of reaction.
nexus9112 [7]
(For a bit of context I will use the reaction between HCl and Mg as an example)

The larger the surface area of the magnesium metal, the more particles are exposed to collide with the aqueous HCl particles to cause the reaction to occur. This increases the frequency per second of collisions, speeding up the rate of reaction.

The effect of a catalyst is to reduce the minimum collision energy which allows the reaction to happen. This does not increase the number of collisions per second, but increases the percentage of successful collisions, which consequently causes the rate of reaction to increase .

I have drawn diagrams showing the effect of surface area, but there isn't really a meaningful diagram that I know of to show the impact of a catalyst (at least not at GCSE level).


6 0
3 years ago
List three possible results of a double replacement reaction
Naddik [55]
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8 0
3 years ago
Chemical equations need to be _________
V125BC [204]

Answer:

advanced

Explanation:

4 0
3 years ago
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A solution of methanol and water has a mole fraction of water of 0.312 and a total vapor pressure of 21 torr at 39.9 degrees C.
Elan Coil [88]

Answer:

Explanation:

Given the details, we can say that

Pure methanol is a volatile solvent as the vapour pressure has a high value. This means that methanol - methanol intermolecular forces are weak in comparisson to water - water forces. When having about 30% of water in a methanol mixture, the mixture Pv decreased, showing that it is not a volatile mixture, so then there are strong intermolecular interactions between methanol - water, part of it due to the hydrogen bonds.

8 0
3 years ago
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