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DiKsa [7]
3 years ago
5

How many electrons will one atom of element with 6 protons and 9 neutrons .

Chemistry
1 answer:
ira [324]3 years ago
4 0

Answer:

The atomic mass of this element would be 12 amu

Explanation:

The subatomic particles provide several bits of information about a given element.

The number of protons is equal to the atomic number of the element. For this element having 6 protons makes the atomic number 6 and makes the element Carbon.

The number of protons plus the number of neutrons equals the atomic mass of the element based upon atomic mass units (amus)

For this element 6 protons and 6 neutrons combine to make an atomic mass of 12 amus.

Lastly, the values of protons and electrons tell whether the atom is an ion or neutral. When protons equal electrons the atom is neutral. When protons are greater than neutrons the atom is a positive charge or cation. When the protons are less than the electrons the atom is a negative charge or anion. For this example the Carbon atom has 6 protons and 6 electrons making it neutral.

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What must be part of a quantitative observation?
Likurg_2 [28]

Quantitative observations include numerical data. Ex: 32 degrees, 10 inches, etc.

4 0
3 years ago
Read 2 more answers
2KI - 2K + 12
Troyanec [42]

Answer:

The answer to your question is 3.5 moles of I₂    

Explanation:

Data

moles of I₂ = ?

moles of KI = 7

Balanced chemical reaction

                2KI  ⇒   2K  +  I₂

Process

To solve this problem use proportions and cross multiplication. Use the coefficients of the balanced chemical reaction for this proportion.

                2 moles of KI --------------------- 1 mol of I₂

                7 moles of KI  --------------------  x

                    x = (7 x 1) / 2

-Simplifying

                    x = 7/2

-Result

                   x = 3.5 moles of I₂        

4 0
3 years ago
how many grams of the excess reactant are left over according to the reaction below given that you start with 10.0 g of al and 1
yan [13]

Answer:

divide 10.0g by each reactant's respective molar mass then divide that number by its coefficient in the balanced reaction. the smaller of the two numbers indicates the limiting reactant - it’s Al

4 0
3 years ago
A human lung at maximum capacity has a volume of 3.0 liters. If the partial pressure of oxygen in the air is 21.1 kilopascals an
MrRa [10]

Answer : 0.026 moles of oxygen are in the lung

Explanation :

We can solve the given question using ideal gas law.

The equation is given below.

PV = nRT

We have been given P = 21.1 kPa

Let us convert pressure from kPa to atm unit.

The conversion factor used here is 1 atm = 101.3 kPa.

21.1 kPa \times \frac{1atm}{101.3kPa}= 0.208 atm

V = 3.0 L

T = 295 K

R = 0.0821 L-atm/mol K

Let us rearrange the equation to solve for n.

n = \frac{PV}{RT}

n = \frac{0.208atm\times 3.0L}{0.0821 L.atm/mol K\times 295 K}

n = 0.026 mol

0.026 moles of oxygen are in the lung

3 0
4 years ago
How to obtain sugar from a solution of sugar in water? Why will filtering not work?
yan [13]

Answer:

Sugar can be obtained by evaporation.

Filtering wont work because sugar is soluble in water thus will mix to form one layer.

7 0
3 years ago
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