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ikadub [295]
4 years ago
12

Which is and element A) Salad B) Sugar C) Water D) Potassium

Chemistry
1 answer:
Semenov [28]4 years ago
3 0

Answer:

the only element above is potassium

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Experiments with rats show that if rats are dosed with 3.0 mg/kg of cocaine (that is, 3.0 mg cocaine per kg of animal mass), the
Aliun [14]

Answer:

The molecules of dopamine would be produced in a rat after 60 seconds of a 3.0 mg/kg dose of cocaine is 2.258\times 10^{12} molecules.

Explanation:

Concentration of dopamine = 0.75 μM = 7.5\times 10^{-7} M

1 μM  = 10^{-6} M

Volume of the brain in which dopamine is produced = V=5.00 mm^3

1 mm^3=10^{-6} L

V = 5.00\times 10^{-6} L

Moles of dopamine = n

Concentration=\frac{moles}{Volume}

7.5\times 10^{-7} M=\frac{n}{5.00\times 10^{-6} L}

n=7.5\times 10^{-7} M\times 5.00\times 10^{-6} L=3.75\times 10^{-12} mol

1 mol = 6.022\times 10^{23} molecules

So, molecules in 3.75\times 10^{-12} mol of dopamine :

3.75\times 10^{-12}\times 6.022\times 10^{23}=2.258\times 10^{12} molecules

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3 years ago
Texas is 790 miles from east to west. How many feet is that if 1 miles is equal to 5,280 feet?
Kitty [74]
The answer is 4,171,200 feet
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4 years ago
Precision can be defined as the?
Leya [2.2K]

Answer:Precision can be defined as the. reproducibility of a measured value. Precision is how close the measured values are to each others. In contrast with accuracy, accuracy is the agreement between a measured value and an accepted value.

Explanation:

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3 years ago
Which material property is most directly related to the x-axis value at the x-intercept of the interatomic force versus distance
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Explanation:

The mechanical properties of a material affect how it behaves as it is loaded. The elastic modulus of the material affects how much it deflects under a load, and the strength of the material determines the stresses that it can withstand before it fails

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A) I think I might be wrong :^

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