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3 years ago

All the atoms in Neon do not have to have 10 protons. True, or false?

Chemistry

2 answers:

Levart [38]3 years ago

5 0

Answer:

true

Explanation:

kramer3 years ago

5 0

Answer:

False.

Explanation:

The number of protons in an atom also places it on the periodic table- the 1st element on the periodic table is Hydrogen because it has 1 proton. If it had 2- it'd be Helium. Neon must have 10 protons to be #10 on the periodic table. (and to even be Neon)

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Give me lil reasoning so I know your not lying for points

jeka94

Answer:

0.01 psi

Explanation:

If you look at the data points plotted on the graph, the slope of the line touches 0.1 for the y-axis when it is at 20 for the x-axis.

3 0

2 years ago

Which type of formula represents the simplest whole-number ratio of atoms of the elements in a compound?

sleet_krkn [62]

The empirical formula represents the simplest whole number shows the simplest whole number ratio of atoms in a compound. An example of this is the empirical formula for glucose (C₆H₁₂O₆) is C₃H₆O₃.

I hope this helps. Let me know if anything is unclear.

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2 years ago

How many milliliters of a 1.25 molar hydrochloric acid (HCl) solution would be needed to react completely with 60.0 grams of cal

stich3 [128]

<u>Answer:</u>

2400 mL

<u>Explanation:</u>

$Ca + 2HCl \implies CaCl_2 + H_2$

According to this equation, the stoichiometric ratio between $Ca$ and $HCl$ for the complete reaction is 1:2.

We know that the number of moles of $Ca$ can be calculated using the mole formula. (<em>number of moles = mass / molar mass</em>)

Moles of Calcium = $\frac{60}{40}$ = 1.5 mol

So the moles of $HCl$ = $1.5 \times 2$ = 3.0 mol

<em>Volume of HCl solution = Moles of HCl/ concentration of HCl</em>

Volume of HCl solution = $\frac{3}{1.25}$ = 2400 mL

4 0

3 years ago

The Paris Agreement intends to direct money toward limiting climate change and lowering greenhouse gas levels. Which groups are

yan [13]

I think the answer it’s e

7 0

3 years ago

Read 2 more answers

In a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes. Determine the average relative atomic

Burka [1]

The average relative atomic mass of a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes is 9.6g.

<h3>What is Atomic mass? </h3>

Atomic mass is defined as the whole mass of an atom.

It is also defined as the sum of atomic number and number of neutrons.

Atomic mass = Atomic number + neutrons

<h3>What is Isotopes?</h3>

Isotopes are the those element which have same atomic number but have different mass number and number of neutrons.

The average relative atomic mass can be calculated as

mass of isotopes/ mass of sample

mass of all isotopes = (70 × 9X) + (30 × 11X)

=(630 + 330) X

= 960X

Average relative atomic mass = 960X/ 100 X

= 9.6 g

Thus, we concluded that the average relative atomic mass of a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes is 9.6g.

learn more about atomic mass:

brainly.com/question/14250653

#SPJ9

5 0

1 year ago