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Dimas [21]
4 years ago
12

1.Non contact forces can act at a distance

Chemistry
1 answer:
Sergeu [11.5K]4 years ago
7 0
1 false 2 true 3 c 4 a 5 a 6 c
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Which of the following is the best description of an elment
Readme [11.4K]

Answer:

d

Explanation:

atoms join together to produce elements

4 0
3 years ago
Read 2 more answers
How many moles of hcl will react when you start with 1 L of a 0.5 M HCl aqueous solution?
Alexeev081 [22]
1L of 0.5M HCl contains 0.5mol of HCl which can react.

This can be found by the fact that
molarity is defined as the number of moles of a substance per Liter of solution. That means that 0.5M of HCl can be thought of as 0.5moles of HCl per liter of solution.

In general to find the number of moles of substance in a solution using the molarity all you do is multiply the molarity by the volume of the solution (in liters).

I hope this helps. Let me know if anything is unclear.
6 0
3 years ago
What is the mass number of the atom shown?
german

Answer:

21

Explanation:

Formula;

Mass number = number of protons + number of neutrons

= 9 + 12

= 21

7 0
4 years ago
What did Rutherford's model of the atom look like? a dense nucleus surrounded by electrons a random mixture of electrons and pro
RSB [31]

Answer:

Explanation:  Rutherford model, also called Rutherford atomic model, nuclear atom, or planetary model of the atom, description of the structure of atoms proposed (1911) by the New Zealand-born physicist Ernest Rutherford. The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun. Hope that helps!

3 0
4 years ago
Which gas will diffuse at a faster rate, CH4 with a molar mass of 16 g or
vivado [14]

Answer:

CH₄ will diffuse at faster rate.

Explanation:

According to Graham's law,

The rate of diffusion is inversely proportional to the square root of molar mas of gas.

It  is given in question the molar mass of CH₄ is 16 g. Thus the square rot of 16 is.

√16 = 4

The molar mass of SO₂ is 64 g and the square root is,

√64 = 16

As it is stated that diffusion rate is inversely related to the square root of molar mass thus the diffusion rate of  SO₂ is lower while methane diffuse faster.

8 0
3 years ago
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