propose a mathematical equation to calculate tje charge on an ion from the number of protons and electrons in an ion.

Answers

Answer 1

Answer: If the ion is a cation, it has a positive charge because it LOST electrons. If its an anion, then it has a negative electron because it GAINED electrons.

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Elements in Group 17 form which ion?
A. 1
B. +1
C. -1
D. 0

Answers

Answer:

Elements in group 17 form C. -1 ions

It would b C. -1
hope this helps

In the unit cell of galena, six square faces of equal size each form 90 degree angles with every adjacent face. What type of crystal system is this?tetragonal
hexagonal
triclinic
cubic

Answers

Answer : The correct option is, Cubic.

Explanation :

As there are seven types of crystal systems which are cubic, tetragonal, orthorhombic, monoclinic, triclinic, rhombohedral and hexagonal.

A unit cell is characterized by the axial length (a, b and c) and axial angle $(\alpha ,\beta ,\gamma )$ parameters which decide the size and shape of the unit cell.

In tetragonal crystal system, $a=b\neq c$ and $\alpha=\beta=\gamma=90^o$

In hexagonal crystal system, $a=b\neq c$ and $\alpha=\beta=90^o,\gamma=120^o$

In triclinic crystal system, $a\neq b\neq c$ and $\alpha\neq \beta\neq \gamma=90^o$

In cubic crystal system, $a=b=c$ and $\alpha=\beta=\gamma=90^o$

Hence, the correct option is, Cubic.

In comparison with liquids and gases, solids area. more dense.
b. more easily compressed.
c. less organized.
d. more likely to flow.

Answers

In comparison with liquids and gases, solids are more dense. The answer is letter B. The solid has a more definite shape and volume. The particles are locked into place. It cannot be further compressed due to the bond that exists between the molecules. The kinetic energy of the molecules is close to none because the molecules are so close and so compact with each other.

The compound before the arrow are called blank and the compound after the arrow are called blank

Answers

First one is reactants and then second one is products

When light waves hit ice, most of them bounce off and radiate back into space. Because of this, ice is best described as which kind of surface? reflective absorbent dense rough

Answers

The bouncing back of light waves observed when light waves hit ice and most of them bounce off and radiate back into space is called reflection.

What are light waves?

Light waves are a form of waves which produces visible sensitization of the eyes

Light waves have properties of waves such as:

reflection
refraction
diffraction
interference, etc.

When light waves hit ice, most of them bounce off and radiate back into space.

This property of light waves is known as reflection.

Learn more about reflection of light waves at: brainly.com/question/1191238

When light waves hit ice, most of them bounce off and radiate back into space, hence, ice is best described as a reflective surface.

What is a Reflective surface?

A reflective surface is one which can cause incident light to bounce back (reflection).

According to this question, when light waves hit ice, most of them bounce off and radiate back into space. This means that most of the incident lightreflects off the ice surface.

Therefore, the ice surface is best described as a reflective surface.

Learn more about reflection at: brainly.com/question/8553652

Calculate the mass in grams of 2.56x10 -3 mol of iron.

Answers

Final answer:

The mass in grams of 2.56x10-3 mol of iron is 0.143 g.

Explanation:

To calculate the mass in grams of 2.56x10-3 mol of iron, you need to use the molar mass of iron. The molar mass of iron is 55.845 g/mol. To find the mass in grams, you can use the following step-by-step calculation:

Mass (g) = Number of moles x Molar mass

Mass (g) = 2.56x10-3 mol x 55.845 g/mol = 0.143 g

Learn more about Calculating mass of a substance using moles here:

brainly.com/question/35918100

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