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ss7ja [257]
3 years ago
14

What is the atomic mass for this element?0,-3,6,3

Chemistry
2 answers:
labwork [276]3 years ago
8 0

Answer:

Atomic mass = number of protons + number of neurons

Atomic mass = 3+3=6

Explanation:

Note atomic mass is equal to mass number

Sedaia [141]3 years ago
6 0

Answer:

3

Explanation:

Atomic number refers to the number of protons in the nucleus of the atom.

and since there are 3 protons, the atomic number is 3

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Which of the following is true about an abiotic resource?
aev [14]

Answer:

B. It is a nonliving resource.

Explanation:

The definition of abiotic is "nonliving," and examples of abiotic resources may include soil or water.

5 0
3 years ago
What is the empirical formula of a compound that contains 49.4% K, 20.3% S, and 30.3% by mass? A) KSO3 B) K2SO3 C) KSO2 D) KSO E
yulyashka [42]

Answer: K_2SO_3.

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of K = 49.4 g

Mass of S = 20.3 g

Mass of O = 30.3 g

Step 1 : convert given masses into moles.

Moles of K=\frac{\text{ given mass of K}}{\text{ molar mass of K}}= \frac{49.4g}{40g/mole}=1.23moles

Moles of S= \frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{20.3g}{32g/mole}=0.63moles[/tex]

Moles of O = \frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{30.3g}{16g/mole}=1.89moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For K = \frac{1.23}{0.63}=2

For S =\frac{0.63}{0.63}=1

For O =\frac{1.89}{0.63}=3

The ratio of K: S:O = 2: 1: 3

Hence the empirical formula is K_2SO_3.

7 0
4 years ago
Gerry and his family have moved into a new home with a great backyard. In the yard, they plan to have a garden, a lawn, and a pa
Anestetic [448]
The base of the garden in the scale drawing is 30 centimeters. (because 10x3 equals to 30)
The height of the garden in the scale drawing is 12 centimeters. (because 4x3 equals to 12)
The length of the patio in the scale drawing is 24  centimeters. (because 8x3 equals to 24)
The width of the patio in the scale drawing is 12 centimeters. (because 4x3 equals to 12)
5 0
4 years ago
Read 2 more answers
Can anyone sort these four into the correct banks?
Naddika [18.5K]

Answer:

yes

Explanation:

7 0
3 years ago
Helpppp helpppp plsssss
Sedbober [7]

\Large \text{1)}

\textbf{Use the formula and substitute the values}

\displaystyle 0.3\ mol/L = \frac{n \ mol}{10 \times 10^{-3}\ L}

\textbf{Solve for the number of moles}

n = 0.003\  mol

\textbf{Calculate final volume }

40+10=50\ mL

\textbf{Number of moles remains same. Solve for concentration}

\displaystyle C=\frac{0.003\ mol}{50 \times 10^{-3}\ L} =0.06\ mol/L

\Large \text{2)}

\displaystyle DF=\frac{V_f}{V_i}

\displaystyle DF=\frac{50}{10}=5

3 0
3 years ago
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