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3 years ago

Which statement explains why sulfur is classified as a group 16 element

2 answers:

7 0

Sulfur has 6 valence electrons, and all of the elements in group 16 have 6 electrons. Therefore, all of the elements in that group have the same properties.

Musya8 [376]3 years ago

6 0

Looking at the periodic table, you can see that it is in the group 16.
Also, Sulfur has 6 e- on the last electronic layer.

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if the mass of a material is 46 grams and the volume of the material is 5 cm^3 what would the density of the material be?

Firlakuza [10]

We use the following formula for calculating the density:

p = m/v

Where:
m = mass
v = volume

So, we have:

p = 46 /5
p = 9,2 g/cm³

8 0

2 years ago

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Number of protons in an atom's nucleus?: _________

Anon25 [30]

Answer:

The number of protons in the nucleus of an atom is its atomic number, which is unique to each element.

Explanation:

7 0

2 years ago

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1. A sample of radon has a half-life of 15 hours. What fraction of the sample is left

Hitman42 [59]

I think I learned this

4 0

3 years ago

In a reaction involving iron, Fe, and oxygen, O. it was determined that 4.166 grams of iron reacted with 1.803 grams of oxygen.

timurjin [86]

Answer: The empirical formula for the given compound is $Fe_2O_3$

Explanation:

We are given:

Mass of Fe = 4.166 g

Mass of O = 1.803 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Iron = $\frac{\text{Given mass of Iron}}{\text{Molar mass of Iron}}=\frac{4.166g}{55.85g/mole}=0.0746moles$

Moles of Oxygen = $\frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{1.803g}{16g/mole}=0.113moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.0746 moles.

For Iron = $\frac{0.0746}{0.0746}=1$

For Oxygen = $\frac{0.113}{0.0746}=1.5$

Converting the mole ratio into whole number by multiplying with '2'

Mole ratio of Fe = (1 × 2) = 2

Mole ratio of O = (1.5 × 2) = 3

Step 3: Taking the mole ratio as their subscripts.

The ratio of Fe : O = 2 : 3

Hence, the empirical formula for the given compound is $Fe_2O_3$

6 0

3 years ago

Consider the following equilibrium:H2CO3(aq) + H2O(l) H3O+(aq) + HCO3-1(aq).What is the correct equilibrium expression?

BaLLatris [955]

1. The equilibrium expression shows the ratio between products and reactants. This expression is equal to the concentration of the products raised to its coefficient divided by the concentration of the reactants raised to its coefficient. The correct equilibrium expression for the given reaction is:

H2CO3(aq) + H2O(l) = H3O+(aq) + HCO3-1(aq)

Kc = [HCO3-1] [H3O+] / [H2O] [H2CO3]

8 0

3 years ago