All categories

3 years ago

PLEASE ANSWER ASAP

Chemistry

2 answers:

Vsevolod [243]3 years ago

7 0

Answer:

The charge of the purple circles should be positive because they represent the nuclei.

Explanation:

AnnZ [28]3 years ago

7 0

Answer:

The correct feedback Zoe will have from this diagrammatic report will be the option B, which is the charge of the purple circles, should be positive because they represent the nuclei.

Explanation:

Metals have fewer electrons in their outermost electron shells, which make them be good electron givers or better reducing agent, also due to their low ionization energy. Therefore, metals tend to become positively charged nucei after losing electrons to the neighboring atoms.

In the case of the metallic bond, the neighboring atoms are still metals. The big purple circles which represent the bigger metallic atoms should be marked with a positive sign, while the small circles in between the bid circles should be marked with negative signs.

You might be interested in

Enter your answer in the provided box. what is the emf of a cell consisting of a pb2 / pb half-cell and a pt / h / h2 half-cell

sp2606 [1]

Answer:

The emf of the electrochemical cell has been calculated to be 3.364.

in order to calculate the emf we need to apply Nernst equation.

The emf has been the potential of the cell in the reaction with the change in the electrons in the reaction. The emf of the cell has been given by the Nernst equation as -

emf= E⁰ cell - 0.059/n. log 1/concentration

Computation for the emf of the cell

The given cell has the number of electrons transfer, n= 2

The concentration of Pb2= 0.57 M

The concentration of H= 0.090 M

The cell potential of the reaction has been= -0.126

Substituting the values for the emf of the cell:

emf= -0.126- 0.059/2 * log 1/ [0.57]x [0.090] ²

emf= 1.555* 2.337

emf=3.634 v

The emf of the electrochemical cell has been calculated to be 3.634 v.

Learn more about emf here-

brainly.com/question/9425530

#SPJ4

4 0

2 years ago

What is an ""acid""? What is a ""base""?

pantera1 [17]

Answer:

There are two definitions for acid and base in chemistry.

Explanation:

There are different definitions of Acid and Base:

The Arrhenius definition sais that acid is every substance that increases the concentration of protons in water. Thus, a base is a substance that increase the concentration of oxydriles in water.

On the other hand, the Bronsted definition sais that an acid is a substance with the ability to give protons and a base is a substance with the ability to accept protons.

5 0

3 years ago

The sugar substitute aspartame is composed of two ________ acids. question 1 options:

VMariaS [17]

Aspartame is an artificial sweetener that is added to food and beverages as a substitute to table sugar or sucrose. It is apparently 200 times sweet than sucrose. It is also more preferable especially in the food industry because its sweetness lasts longer than sucrose does. Aspartame is a methyl ester from two acidic amino acids, aspartic acid and phenylalanine. It also constitute a small portion of methanol. The composition is 40% aspartic acid, 50% phenylalanine and 10% methanol. This compound was accidentally discovered by James Schlatter when he was trying to test an anti-ulcer drug.

5 0

4 years ago

How does crystals apply to a real world problem

svet-max [94.6K]

When you are looking in a jewelry store and you want to know how many carrots are in the diamonds.

6 0

4 years ago

How many moles of calcium carbonate-CaCO3 = 4.15 g

marin [14]

Answer:

Number of moles = 0.042 mol

Explanation:

Given data:

Number of moles = ?

Mass of calcium carbonate = ?

Solution:

Formula:

Number of moles = mass/ molar mass

now we will calculate the molar mass of calcium carbonate.

atomic mass of Ca = 40 amu

atomic mass of C = 12 amu

atomic mass of O = 16 amu

CaCO₃ = 40 + 12+ 3×16

CaCO₃ = 40 + 12+48

CaCO₃ = 100 g/mol

Now we will calculate the number of moles.

Number of moles = 4.15 g / 100 g/mol

Number of moles = 0.042 mol

3 0

4 years ago