CHEMISTRY HIGH SCHOOL

Hich one of the following is radical?(1 Point)

a.NH4+

b. CuSO4

c. CH4

d. NH3​

Answers

Answer 1
Answer:

Answer:

NH4+

Explanation:

Radicals are molecules or atoms which contain unpaired electrons. the exponent +4 represents 4 electrons in the outer shell which are unpaired

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Which statement is true about shape?A. All substances have
a set shape
B. Liquids take the shape of their container
C. You cannot change the shape of a substance
D. Shape is a characteristic property

Answers

B: Liquid take the shape of their container.

Maggie is solving a chemistry riddle her clue is to take the number of valence electrons in halogens and subtract it by the number of valence electrons in alkali metals. what is the answer to the riddle maggie is solving?

Answers

The answer to the riddle Maggie is solving is 6

To determine the answer to the riddle Maggie is solving,

We will subtract the number of valence electrons in halogens by the number of valence electrons in alkali metals.

First, let us define what is meant by valence electrons

Valence electrons are those electrons that reside in the outermost shell surrounding an atomic nucleus.

Now, we will the determine the respective number of valence electrons in halogens as well as the number of valence electrons in alkali metals.

For Halogens

Halogens are the group 17 (group 7A) elements in the periodic table. Examples are Fluorine, Chlorine, Bromine etc.

Halogens have 7 electrons in their outermost shell

For Alkali metals

Alkali metals are the group 1 metals. Examples are Lithium, Sodium, Potassium etc.

Alkali metals have 1 electron in their outermost shell

Now, for the answer to the riddle,

Answer to the riddle = Number of valence electrons in halogens - Number of valence electrons in Alkali metals

\

Answer to the riddle = 7 - 1

∴ Answer to the riddle = 6

Hence, the answer to the riddle Maggie is solving is 6

Learn more here: brainly.com/question/9392364

Solve for y. -3/y+6=2

Answers

Answer: -7.5

Explanation: To solve for y in the equation -3/(y + 6) = 2, you can follow these steps:

First, we want to get rid of the fraction. To do that, multiply both sides of the equation by (y + 6) to cancel out the denominator:

-3/(y + 6) * (y + 6) = 2 * (y + 6)

This simplifies to:

-3 = 2(y + 6)

Now, distribute 2 on the right side of the equation:

-3 = 2y + 12

Next, isolate the term with 'y' by subtracting 12 from both sides of the equation:

-3 - 12 = 2y

-15 = 2y

Finally, divide both sides by 2 to solve for 'y':

-15/2 = y

So, the solution for y is:

y = -15/2

You can also express this as a mixed number:

y = -7.5

Identify the type of reaction in KBrO3(s)  KBr(s)
+ O2(g)

Answers

I had this question in chemistry, and i'm sure it's a  decomposition reaction.
I believe an oxidation reaction is occurring

A substance has a mass of 360 g and a volume of 7.5 cm3. What is its density?a. 2700 g/cm3
c. 480 g/cm3
b. 270 g/cm3
d. 48 g/cm3

Answers

D = g / cm³

Density = mass / volume

D = 360 g / 7.5 cm³

D = 48 g/cm³

answer D

hope this helps!

In Experiment 1, the density of pure ethanol was found to be:Question 1 options:less than 0.793 g/mL.0.793 g/mL.0.999 g/mL.greater than 0.999 g/mL.

Answers

It is 21 due to math a marica
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