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4 years ago

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

Brrunno [24]

Answer:

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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2 years ago

What might happen if your respiratory center malfunctioned?

daser333 [38]

Answer:

A) I think I might be wrong :^

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3 years ago

Read 2 more answers