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2 years ago

What is the symbol for an ion with 50 protons 48 electrons 68 neutrons?

1 answer:

8 0

Sn2+

Your protons equal the atomic number of an element: Sn (Tin).

The amount of protons and electrons will be the same if the atom is neutral. In this case, tin has lost two electrons and so tin is no longer neutral and becomes Sn2+

To double check, you would subtract the atomic number from the mass number of tin to see if the number of neutrons is equal to what has been provided.

mass number - atomic number = number of neutrons
118 - 50 = 68

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1. empirical formula for Cu2o4?

Wittaler [7]

We know that

1) empirical formula of a compound is the representation of a molecules with the elements in simplest mole ratio.

2) the molar mass is the actual proportion of moles of elements present in a molecule

3) there is a simple ratio between the molar mass and empirical mass a molecule

Now let us solve each problem

1) empirical formula of $Cu_{2}O_{4}$ will be $CuO_{2}$

2) empirical formula of $Zn_{3}(NO_{3})_{4}$ will be $Zn_{3}(NO_{3})_{4}$

3) empirical formula of $Ti_{2}S_{2.5}$ will be $Ti_{4}S_{5}$

4) the molecular formula will be :

$Ratio=\frac{molarmass}{empiricalformula}=\frac{112.04}{28.01}=4$

the molecular formula = 4 X empirical formula = 4 X CO = $C_{4}O_{4}$

5) the mole ratio of Cl and Cr is $\frac{1.90}{0.631}=3$

empirical formula will be $CrCl_{3}$

6 0

2 years ago

An unknown substance has a density of 56 g/cm3. Its volume is 3.5 cm.

postnew [5]

Answer:

<h3>The answer is 196 g</h3>

Explanation:

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

mass = Density × volume

From the question we have

mass = 56 × 3.5

We have the final answer as

Hope this helps you

3 0

1 year ago

The type of surface that warms up the slowest is .

Lyrx [107]

Answer:

Answer might be Water...

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1 year ago

According to the big bang theory, galaxies formed a billion years after the "bang" from matter that clumped together due to grav

faust18 [17]

This is FALSE.

In the Bible, God created the heavens and the earth.

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Answer: False

Happy studying ^-^

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2 years ago

When the methanol is ignited, what other reactant is involved in the reaction?.

babymother [125]

Oxygen has to be involved when methanol is ignited

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1 year ago