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2 years ago

6. Three ice cubes are placed inside a glass of hot chocolate. Which of the following best

Chemistry

1 answer:

ycow [4]2 years ago

4 0

It’s the first 1 M yea it’s the first one

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23492u undergoes alpha decay. what is the atomic number of the resulting element.

mash [69]

Alpha decay involves the loss of an alpha particle, aka a helium nucleus. This results in the mass number of the original element decreasing by 4 and the atomic number decreasing by 2. Assuming 23942u is uranium (92), the resulting element's atomic number is 90, making it thorium.

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2 years ago

Most of the X-rays are absorbed in which layer of Earth's atmosphere?

Rainbow [258]

Explanation:

most of the x-rays are absorbed in thermosphere of earth's atmosphere

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2 years ago

Making a pancake from batter is an example of blank change

lesantik [10]

Answer is: chemical.

Making a pancake from batter is chemical change (chemical reaction), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change.

Batter is thin dough that is poured into a pan to make pancakes.

In physical change, the same substance is present before and after the psysical change, just with different form or state of matter.

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2 years ago

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How many neutrons does the isotope lithium have<br> A.) 3 <br> B.) 5 <br> C.) 8 <br> D.) 4

Fantom [35]

The answer is D they have 4 neutrons

6 0

2 years ago

Read 2 more answers

Consider the following system at equilibrium at 723 K: 2 NH3 (g) 26.6 kcal N2 (g) 3 H2 (g) Indicate whether each individual chan

ZanzabumX [31]

Answer:

- To increase the temperature as it is a reactant in terms of its endothermicity.

- To remove it will enable more space for the reactant to favor its production.

- To add more reactant in order to increase its equilibrium concentration.

Explanation:

Hello,

The undergoing chemical reaction is:

$2NH_3(g)\rightleftharpoons 3H_2(g)+N_2(g)$

Thus, in order to intensify the amount of nitrogen as the chemical reaction is endothermic, considering the Le Chatelier's principle we state:

- To increase the temperature as it is a reactant in terms of its endothermicity.

- To remove it will enable more space for the reactant to favor its production.

- To add more reactant in order to increase its equilibrium concentration.

Best regards.

4 0

3 years ago