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creativ13 [48]
3 years ago
12

A soda has a volume of 225 ml and a density of 3.2 g/ml. What is the mass

Chemistry
1 answer:
snow_lady [41]3 years ago
5 0

Answer:

The answer is

<h2>720 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 225 mL

density = 3.2 g/mL

The mass is

mass = 3.2 × 225

We have the final answer as

<h3>720 g</h3>

Hope this helps you

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ohaa [14]

Answer:

0.01395mol Cr2O3

Explanation:

the molar mass of Cr2O3 is 151.9904 g/mol

2.12g Cr2O3 x 1 mol/151.9904g = 0.01395mol Cr2O3

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PLEASE HELP ASAP
sashaice [31]

Answer:

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SEP Develop Models Each helium atom has two protons. Sketch models
RSB [31]

Protons and neutrons are located in the nucleus of the atom while the electrons move in the trajectory of the shell

<h3>Further explanation   </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Isotopes of Helium : helium-3 and helium-4

  • ₂³He :

protons = 2

electrons=protons=2

neutron=mass number-atomic number=3-2=1

  • ₂³He :

protons = 2

electrons=protons=2

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6 0
3 years ago
For which of the following elements would the most common ion be expected to have a larger radius than that of its corresponding
Andre45 [30]

<u>Answer:</u> The ion that is expected to have a larger radius than the corresponding atom is chlorine.

<u>Explanation:</u>

There are two types of ions:

  • <u>Cations:</u> They are formed when an atom looses its valence electrons. They are positive ions.
  • <u>Anions:</u> They are formed when an atom gain electrons in its outermost shell. They are negative ions.

For positive ions, the removal of electron increases the nuclear charge for an outermost electron because the outermost electrons are more strongly attracted by the nucleus. So, the effective nuclear charge increases for cations and thus, the size of the cation will be smaller than that of the corresponding atom.

For negative ions, the addition of electron decreases the nuclear charge for an outermost electron because the outermost electrons are less strongly attracted by the nucleus. So, the effective nuclear charge decreases for anions and thus, the size of the anion will be larger than that of the corresponding atom.

For the given options:

<u>Option a:</u> Chlorine

Chlorine gains 1 electron and form Cl^- ion

<u>Option b:</u> Sodium

Sodium looses 1 electron and form Na^+ ion

<u>Option c:</u> Copper

Copper looses 2 electrons and form Cu^{2+} ion

<u>Option d:</u> Strontium

Strontium looses 2 electrons and form Sr^{2+} ion

Hence, the ion that is expected to have a larger radius than the corresponding atom is chlorine.

8 0
3 years ago
Isotopes are atoms of the same element that have the same chemical property but may not have the same physical properties A true
Romashka-Z-Leto [24]

Answer:

false

Explanation:

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