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Musya8 [376]
4 years ago
15

What is the equation for maganese sulfide

Chemistry
1 answer:
KiRa [710]4 years ago
8 0
Magnese sulfide would be MnS
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The age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactiv
True [87]
The age of the fossil given the present amount of Carbon-14 is given in the equation,
                               A(t) = A(o)(0.5)^t/h
where A(t) is the current amount, A(o) is the initial amount, t is time and h is the half-life. Substituting the known values to the equation,
                       A(t) / A(o) = 0.125 = (0.5)^(t/5730)
The value of t from the equation is 17190.
Thus, the age of the fossil is mostly likely to be 17190 years old. 
8 0
3 years ago
Volume of a gas at STP, if its volume is 80.0 mL at 1.08 atm and –12.5oC.
vodomira [7]

Answer:

90.5mL is the volume of the gas at STP

Explanation:

It is possible to find volume of a gas when conditions of temperature and pressure change using combined gas law:

\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}

Where P is pressure, V is volume and T is absolute temperature. 1 is initial conditions and 2 final conditions.

If initial conditions are 1.08atm, 80.0mL and absolute temperature is (-12.5°C + 273.15) = 260.65K.

And STP are 1atm of pressure and 273.15K of absolute temperature. Replacing:

\frac{1.08atm80.0mL}{260.65K} =\frac{1atmV_2}{273.15K}

V₂ = <em>90.5mL is the volume of the gas at STP</em>

7 0
3 years ago
Read 2 more answers
What is Keq for the reaction N2 + 3H2 2NH3 if the equilibrium concentrations are [NH3] = .250 M, [N2] = .590 M, and [H2] = .750
Lena [83]
After thorough researching, the Keq for the reaction N2 + 3H2 2NH3 if the equilibrium concentrations are [NH3] = .250 M, [N2] = .590 M, and [H2] = .750 M is 1.33. The correct answer to the following given statement above is 1.33
3 0
3 years ago
Read 2 more answers
Dtermine the volume in liters occupied by 0.030 miles of a gas at stp
aliina [53]
1 mole -------- 22,4 L ( at STP )
0.030 moles --- ?

V = 0.030 * 22,4 / 1

V = 0.672 L

hope this helps!
4 0
4 years ago
When you pour 125 grams of solute into 1.25 Liters of 35 grams of crystal sink to the bottom and do not dissolve. What is the sa
Sati [7]

Answer:

72 g/L

Explanation:

The dissolved amount of solute is the difference between the amount you have poured and the amount that precipitated:

125 g - 35 g = 90 g

Thus, 90 grams of solute were dissolved in 1.25 liters. The saturation point is the ratio between the grams dissolved and the volume in liters:

saturation point = 90 g/1.25 L = 72 g/L

4 0
3 years ago
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