Which of the following items would dissolve most quickly in a glass of warm water?

Chemistry

1 answer:

andrezito [222]2 years ago

4 0

Answer:

A. a spoonful of granulated sugar

Explanation:

hope that helps :)

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What is the product if an atom of Po-209<br> undergoes alpha decay?

g100num [7]

<h3>Answer:</h3>

Lead-205 (Pb-205)

<h3>Explanation:</h3>

<u>We are given;</u>

An atom of Po-209

We are supposed to identify its product after an alpha decay;

Polonium-209 has a mass number of 209 and an atomic number of 84.
When an element undergoes an alpha decay, the mass number decreases by 4 while the atomic number decreases by 2.
Therefore, when Po-209 undergoes alpha decay it results to the formation of a product with a mass number of 205 and atomic number of 82.
The product from this decay is Pb-205, because Pb-205 has a mass number of 205 and atomic number 82.

The equation for the decay is;

²⁰⁹₈₄Po → ²⁰⁵₈₂Pb + ⁴₂He

Note; An alpha particle is represented by a helium nucleus, ⁴₂He.

7 0

3 years ago

Can depletion to the ozone cause changes to the biochemical cycles

GuDViN [60]

Hoi!!

its true

hope this help!!
:) np

4 0

2 years ago

We consider a spherical air bubble rising through a water tank. The pressurepinside the bubble isequal to its surrounding pressu

DENIUS [597]

The answer is a change in internal energy causes work to be done and heat to flow into the system.

<u>Explanation:</u>

Boyle's law says, PV=RT

Here P represents the pressure, V represents the volume and T represents the temperature. R is a constant. The volume of an ideal gas is inversely proportional to its pressure if the temperature is constant.
When a bubble is present in deep water it has water pressure and atmospheric pressure. Then the Volume increases when water pressure raises which is proportional to the depth reduces.
But we should not finalize the volume of the bubble will be four-time as great as at the top than the bottom. if the bottom of the lake is at four atmospheres, the temperature will not be equal to the top.
If the bubble travels from the bottom to the top or vice-versa, it's going to lose or gain heat in a way that must be quite hard to measure.

8 0

3 years ago

Draw the structures of the two monomers that react together to form this polyurethane polymer

matrenka [14]

The monomers that react together to form polyurethane polymer are diisocyanate and diol.

<h3>What are polymers?</h3>

Polymers are a class of natural or synthetic substances
It is made up of small units called monomers arranged in a repeated pattern to form large molecules called macromolecules
Cellulose and resins are examples of natural polymers
Polyethylene and polychloroprene are examples of synthetic polymers.

Polyurethane polymer is made up of monomers diisocyanate and diol. It is mostly used in home furnishing in flexible form. The structures of monomers are as follows:

Learn more about polymers:

brainly.com/question/17638582

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