All categories

3 years ago

The last answer choice us D. Adding more of the chemical will hear the water but only up to a certain temperature

Chemistry

1 answer:

enot [183]3 years ago

4 0

D. Adding more of the chemical will heat the water but only up to a certain temperature

<h3>Further explanation</h3>

Chemical changes are changes in the process that produce new substances that are different from the initial/ forming substances. Chemical changes are usually known as chemical reactions. So there are products/reactions and reactants and there is a change in the molecule/particle

The chemical reaction is usually followed by the release of heat, gas, change in color, precipitate substance etc

The heat that occurs in the addition of chemicals is caused by the reaction with water. But there is a constant rise in temperature when water reaches its maximum capacity to react with these chemicals.

Evidenced by the addition of 15 g and 20 g of chemicals, the temperature changes are constant

You might be interested in

Help please What percentage of the world does not have a reliable source for clean water?

disa [49]

Answer:9%

Explanation:

7 0

2 years ago

The book procedure calls for 2,5-dimethylhexane-2,5-diol and concentrated hydrochloric acid to be shaken in a reaction vial. Whi

san4es73 [151]

Answer:

E) All of the above.

Explanation:

Hello,

Since the acidic nature of the HCl implies its corrosiveness, when it is in contact with the skin and eyes the burning starts immediately, so gloves and goggles must be worn. Next, the fuming hydrochloric acid (37% by mass) is volatile so it gives off even when dissolved into water, so it must be used in the fume hood. Then, since vapors are produced during the chemical reaction, an overpressure could be attained, that's why we must keep the glass sash of the fume hood between us and the vial. As a common risk, the vial could be dropped causing the hydrochloric acid to splash, so we must keep the vial well inside the hood.

Best regards.

7 0

3 years ago

Write the atomic symbol for the isotope of bismuth with 125 neutrons.

vlada-n [284]

First, isotopes are the atoms of a single element whose nuclei have a different number of neutrons, and therefore, differ in mass numbers. You should know that atoms are formed by a nucleus that has a small size and is made up of protons and neutrons. The nucleus is surrounded by a cloud of electrons, which are found in a region of the atom called the cortex.

The mass number, represented as A, is the sum of the number of protons and neutrons in the nucleus. On the other hand, the atomic number (Z) is the number of protons that exist in the nucleus.

The isotopes of an element X are represented as follows,

(see first attached picture)

It should be noted that the number of neutrons of a chemical element can be calculated as the difference A-Z.

The atomic and mass numbers of bismuth with 125 neutrons are:

Z = 83

A = 83 + 125 = 208

Thus, the atomic symbol of the bismuth isotope with 125 neutrons is:

(see second attached picture)

5 0

3 years ago

Which section of the reaction represents the reactants

Diano4ka-milaya [45]

A should be the products and D should be the reactants. So D should be the answer.

8 0

3 years ago

Plastics are synthetic, organic polymers. how are plastics similar and different to polysaccharides

yawa3891 [41]

Plastics and polysaccharides are somewhat similar because they are both polymers. Polymers are a long chain of repeating units called monomers. Their difference, however, is the identity of their monomers. Plastics have hydrocarbons as monomers. Plastics with the monomer ethene is called polyethylene. For polysaccharides, their monomers are simple sugars.

6 0

3 years ago