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3 years ago

All atoms of the same element:

Chemistry

1 answer:

34kurt3 years ago

7 0

Answer:

have the same number of protons

Explanation:

Atoms of the same element will always have the same number of protons.

Protons are the positively charged particles in an atom which are located in the nucleus.

To recognize an atom, the number of protons is used.
The number of protons is the atomic number.
On the periodic table, atoms are arranged based on the number of protons.

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Write balanced equations for all the reactions in the catabolism of glucose to two molecules of glyceraldehyde 3-phosphate (the

Reil [10]

Solution :

The balanced chemical equation are

The Catabolism of the glucose takes place in five stages :

1. Glucose + $ATP$ → glucose - $6$ - phosphate $+ ADP$ , $\Delta G^0=-16.7 \ kJ/mol$

2. Glucose - $6$ - phosphate → Fructose - $6$ - phosphate , $\Delta G^0=1.7 \ kJ/mol$

3. Glucose - $6$ - phosphate + $ATP$ → $ADP$ + Fructose - $1,6- \text{biophosphate}$ , $\Delta G^0=-14.2 \ kJ/mol$

4. Fructose - $1,6- \text{biophosphate}$ → dihydroxyacetonephosphate + glyceraldehyde $-3 -$ phosphate, $\Delta G^0=23.8 \ kJ/mol$

5. Dihydroxyacetonephosphate → glyceraldehyde $-3 -$ phosphate , $\Delta G^0=7.5 \ kJ/mol$

Therefore, the overall net equations

Glucose + $2ATP \rightarrow$ glyceraldehyde $-3 -$ phosphate + $2ADP$ $\Delta G^0=2.1 \ kJ/mol$

5 0

3 years ago

What is the final product of the following sequence of reactions? A. A B. B C. C D. D 21. Which of the following reacts the fast

Gala2k [10]

Answer:

Correct answer is Option A:

A. ethylene oxide (oxirane)

Explanation:

It reacts faster because it leads to a tertiary cation.

5 0

4 years ago

Nitric oxide can be oxidized in air to form nitrogen dioxide. At normal atmospheric concentrations this is a very slow process.

lawyer [7]

Answer:

exothermic

Explanation:

This is an exothermic reaction because you can see the 232.4 kJ at the end of the reaction. That means that 232.4 kilo-joules are released when the reaction happens; when energy is released during a reaction, the reaction is exothermic.

Tell me if you need anything else! :)

6 0

4 years ago

For a science experiment Marcia dissolved 1.0 kilogram of salt in 3.0 liters of water. For a different experiment, Bobby dissolv

My name is Ann [436]

Answer: Marcia made a more concentrated salt solution.

Explanation:

Marcia used 1 kg of salt, which the exercise tells us is 2.2 lb.

She dissolved it in 3L of water, so we have to find out how much that is in pints. We do that using cross multiplication.

If 1L equals 2.11 pints, then

xpints / 3L = 2.11pints / 1L, so

xpints = (3L . 2.11pints) / 1L = 6.33 pints

Now we know she dissolved 2.2lb in 6.33 pints of water. We use cross multiplication again to find out how much salt she would have in 10 pints, so we can know how concentrated it is compared to Bobby's solution, which is 10 pints.

xlb / 10pints = 2.2lb / 6.33pints

xlb = (10pints . 2.2lb) / 6.33pints = 3.47lb

So Marcia has a concentration of 3.47lb per 10 pints, whereas Bobby only has 3lb per 10 pints.

8 0

3 years ago

Match the following:

chubhunter [2.5K]

Answer:

1. a chemical reaction in which one substance breaks up into two or more new substances: decomposition reaction

2. a reaction in which two or more substances combine to form a new substance: synthesis reaction

3. the reaction of an acid with a base to form a salt and water: neutralization reaction.

4. chemical compound formed when the negative ions from an acid combine with the positive ions of a base: salt

5. two ionic compounds reacting in solution to form two new compounds, one of which is insoluble: double displacement reaction.

6. a reaction in which an active metal displaces a less active metal or hydrogen from a compound solution (or a nonmetal replaces a nonmetal from a compound in solution): Single replacement reaction

Explanation:

1. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example: $Li_2CO_3\rightarrow Li_2O+CO_2$

2. Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.

Example: $Li_2O+CO_2\rightarrow Li_2CO_3$

3 and 4. Neutralization is a chemical reaction in which an acid and a base reacts to form salt and water. Salt is formed when cations or positive ions of base combine with anions or negative ions of acid.

Here $KCN$ is the salt formed by combination of $K^+$ from base and $CN^-$ from acid.

Example: $H^++CN^-+K^++OH^-\rightarrow K^++CN^-+H_2O$

5. A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

Example: $2NaOH(aq)+(NH_4)_2SO_4(aq)\rightarrow 2NH_4OH(aq)+Na_2SO_4(aq)$

6. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example: $Zn+2HCl\rightarrow ZnCl_2+H_2$

3 0

3 years ago