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2 years ago

6

Why do you think elements on the left side of the table would want to react with ones on the right side?

1 answer:

puteri [66]2 years ago

3 0

Answer:

because they are reactive.

Explanation:

The left side of the table have one more electron lift in outermost shell.and the electron in right side want one more electron to be stable for these case they want each other.

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Compare and contrast the sizes of protons neutrons and electrons.

RideAnS [48]

Answer:

Protons and neutrons have very similar mass, while electrons are far lighter, approximately 11800 times the mass. Protons are positively charged, neutrons have no electric charge, electrons are negatively charged. The size of the charges is the same, the sign is opposite

Explanation:

8 0

4 years ago

How many protons, neutrons, and electrons doe fluorine have?

e-lub [12.9K]

It has 9 protons, 9 electrons and 10 neutrons.

8 0

4 years ago

Read 2 more answers

A liquid sample, with a density of .0915 g/mL has a mass of 17.7 grams.

Arlecino [84]

The relation between density, mass and volume is

$Density = \frac{Mass}{Volume}$

1) to calculate = volume

given:

Density = 0.0915 g/ mL

mass = 17.7 grams

formula used:

$Density = \frac{Mass}{Volume}$

Thus

Volume $Volume = \frac{Mass}{Density} = \frac{17.7 g}{0.915 \frac{g}{mL} } = 193.44 mL$

Answer: 193.44 mL

2) the mass of sample will be

$mass = density X volume = 0.0915\frac{g}{mL} X 76.5 mL = 6.99 = 7 g$

Answer: 7 g

5 0

3 years ago

How many moles are represented by 3.01 - 1023 helium atoms?

Pavlova-9 [17]

Answer:

0.5 mol

Explanation:

Given data:

Number of atoms of He = 3.01 ×10²³

Number of moles = ?

Solution:

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.02 × 10²³ is called Avogadro number.

1 mole = 6.02 × 10²³ atoms

3.01 ×10²³ atoms × 1 mol / 6.02 × 10²³ atoms

0.5 mol

7 0

3 years ago

Each cubic centimeter of gold has a mass of 19.3 g. A cube of gold measures 4.23 cm on each edge. (a) What is the volume of the

aivan3 [116]

Answer: The volume of the gold is $75.68g/cm^3$

The mass of gold is 19.3 g

The density of gold is $0.25g/cm^3$

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given : Mass of gold = 19.3 grams

To calculate the volume of cube, we use the equation:

$V=a^3$

where,

V = volume of cube

a = edge of cube

Volume of gold = $(4.23cm)^3=75.68cm^3$

Putting values in above equation, we get:

Putting in the values we get:

$Density=\frac{19.3g}{75.68cm^3}=0.25g/cm^3$

Thus density of gold will be $0.25g/cm^3$

4 0

3 years ago