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3 years ago

11

Knowing what you know about the nucleus and the subatomic particles in the nucleus, what do you think is the charge of the nucle

us of an atom?

2 answers:

miskamm [114]3 years ago

5 0

Answer:

Sample Response: The nucleus of an atom has a positive charge because the proton is positive and the neutron is neutral.

Explanation:

iragen [17]3 years ago

4 0

What I think is the charge of nucleus is the proton+neutron

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PLEASE HELP ASAP!

choli [55]

Answer:

$\large \boxed{\text{D. 710 g}}$

Explanation:

1. Calculate the molar mass of Na₂SO₄

$\begin{array}{ccc}\textbf{Atoms} &\textbf{M}_{\textbf{r}} & \textbf{Mass/u}\\\text{2Na} & 23 & 46\\\text{1S} & 32 & 32\\\text{4O}&16 & 64\\&\text{TOTAL =} & \mathbf{142}\\\end{array}$

The molar mass of Na₂SO₄ is 142 g/mol.

2. Calculate the moles of Na₂SO₄

$\text{Moles of Na$_{2}$SO}_{4} = \text{2.5 L solution} \times \dfrac{\text{2.0 mol Na$_{2}$SO}_{4}}{\text{1 L solution}} = \text{5.0 mol Na$_{2}$SO}_{4}$

3. Calculate the mass of Na₂SO₄

$\text{Mass of Na$_{2}$SO}_{4} = \text{5.0 mol Na$_{2}$SO}_{4} \times \dfrac{\text{142 g Na$_{2}$SO}_{4}}{\text{1 mol Na$_{2}$SO}_{4}} = \text{710 g Na$_{2}$SO}_{4}\\\\\text{You need } \large \boxed{\textbf{710 g}} \text{ of Na$_{2}$SO}_{4}$

6 0

3 years ago

Which element reacts spontaneously with 1.0M HCl (aq) at room temperature?

Ad libitum [116K]

<span>(4) zinc.................</span>

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3 years ago

Read 2 more answers

COMPOSICIÓN PORCENTUAL

Allisa [31]

Óxido de hierro (lll)

8 0

3 years ago

What is Science-Based Medicine?

SSSSS [86.1K]

Answer: Medicine is a scientific field whose subject of research is the health and well-being of living whips.

Explanation:

Primarily medicine deals with the study of man and the treatment of man, but also of some animal species. Two principles are founded: theoretical research and practical, or often called a clinical policy. The academic and research law will enable a specific area, disease, congenital disability, or condition to be defined, studied in detail, and after the conclusion of tests performed. Concluded medical theory is most often put into a usable form through various educational processes, which will lead to the ultimate goal - to improve the health of living forms on which this theory will be applied.

6 0

3 years ago

What mass of water in grams will fill a tank 126cm long, 47 cm wide, and 13 cm high

Shtirlitz [24]

Answer:

Mass = 76986 g

Explanation:

Given data:

Dimensions of tank = 126 cm× 47 cm× 13 cm

Mass of water required to filled = ?

Solution:

First of all we will calculate the volume of tank which is equal to the volume of water required to fill it.

Volume = length ×height ×width

Volume = 126 cm × 13 cm× 47 cm

Volume = 76986 cm³

Mass of water:

Mass = density × volume

density of water is 1 g/cm³

Mass = 1 g/cm³× 76986 cm³

Mass = 76986 g

8 0

3 years ago