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3 years ago

If you increase the force on an object, its acceleration increases. True or false

Chemistry

1 answer:

lions [1.4K]3 years ago

8 0

Answer:

true

Explanation:

from Newton's second law of motion ,we can understand that acceleration of a body is directly proportional to the force applied on it and inversely proportional to its mass ,so as the force applied increase,the acceleration also increases

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Calculate the Empirical Formula for the following compound: 0.300 mol of S and 0.900 mole of O.

ziro4ka [17]

Answer:

$\boxed {\boxed {\sf SO_3}}$

Explanation:

An empirical formula shows the smallest whole-number ratio of the atoms in a compound.

So, we must calculate this ratio. Since we are given the amounts of the elements in moles, we can do this in just 2 steps.

<h3>1. Divide </h3>

The first step is division. We divide the amount of moles for both elements by the smallest amount of moles.

There are 0.300 moles of sulfur and 0.900 moles of oxygen. 0.300 is smaller, so we divide both amounts by 0.300

Sulfur: 0.300/0.300= 1
Oxygen: 0.900/0.300= 3

<h3>2. Write Empirical Formula</h3>

The next step is writing the formula. We use the numbers we just found as the subscripts. These numbers go after the element's symbol in the formula. Remember sulfur is S and there is 1 mole and oxygen is O and there are 3 moles.

S₁O₃

This formula is technically correct, but we typically remove subscripts of 1 because no subscript implies 1 representative unit.

SO₃

$\bold {The \ empirical \ formula \ for \ the \ compound \ is \ SO_3}}$

6 0

3 years ago

4.702 x 10^-4 in standard form?

Julli [10]

The answer is .0004704. i hope that helped.

7 0

3 years ago

Referring only to the periodic table, tell:

denpristay [2]

a) Both fluorine and chlorine are in the same group in periodic table.

b) They differ in their atomic radius and electronegativity.

c) Because they have the similar number of electrons in their outer shell.

Explanation:

a) Electronic configuration of chlorine and fluorine are similar because these two elements belong to the same group number 17 of the periodic table as they have the same number of electrons in their outer or valence shell. These are called as halogens and are highly reactant.

F - 1s2,2s2,2p5 (9)

Cl- 1s2,2s2,2p6,3s2,3p5 (17)

b. The atomic radius of chlorine and fluorine are different because fluorine is on top of chlorine in the group. We know as we go down in a group in the periodic table the atomic radius increases though they have the same number of electrons in their outer shell electronegativity decreases. Fluorine is the most electronegative element of the periodic table.

c) Iodine and bromine are also the members of group 17, although their atomic numbers are different they have same valence electrons as chlorine and fluorine.

Iodine electronic configuration: 1s2,2s2,2p6,3s2.........4d10,5s2,5p5.

Bromine electronic configuration: 1s2,2s2,2p6,3s2,........3d10,4s2,4p5

Chlorine electronic configuration: 1s2,2s2,2p6,3s2,3p5

We can observe the outer shell having same number of electrons.

8 0

3 years ago

Help me please i don’t understand the problem

brilliants [131]

Answer:

Atoms are neither created or destroyed.

Explanation:

The end result of a chemical change does not create or destroy any atoms. Matter cannot be created or destroyed, meaning the same amount of atoms exist before and after the change.

5 0

4 years ago

Read 2 more answers

How many electrons in an atom can have the following quantum

gavmur [86]

The answer for the following question is explained.

Therefore the number of electrons present with the values n = 5, l = 2, m = -2, s = +1/2 is one(1).

Explanation:

Here;

n represents the principal quantum number

l represents the Azimuthal quantum number

m represents magnetic quantum number

s represents spin quantum number

n = 5,

l = 2,

m = -2,

s = +1/2

Here, it implies 5d orbital.

In the 5d orbital, 10 electrons.

As the magnetic quantum number is -2, and so it can have 1 electron.

Therefore the number of electrons present with the values n = 5, l = 2, m = -2, s = +1/2 is one(1)

7 0

3 years ago