2 years ago

What is the density of an object with a mass of 20 grams and a volume of 5 ml?

SAT

1 answer:

Alex Ar [27]2 years ago

5 0

To calculate the density, we must do 20/5 which is 4, so the answer is 4 g/ml

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In a newspaper, it was reported that the number of yearly robberies in Springfield in 2012 was 200, and then went down by 14% in

slamgirl [31]

Answer:

172

Explanation:

you multiply the 200 times the 14% in a format suvh as this, 200x.14 because 14% is out of 100% and you can see the 100% as 1.00, then the answer is 28 and subtract 28 from 200 ant that equals 172.

6 0

3 years ago

For the galvanic (voltaic) cell fe(s) + mn²⁺(aq) ⟶ fe²⁺(aq) + mn(s) (e° = 0.77 v at 25°c), what is [fe²⁺] if [mn²⁺] = 0.050 m an

Nuetrik [128]

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<h3>What is the Nernst Equation?</h3>

The Nernst equation enables us to identify the cell potential(voltage) in presence of non-standard conditions in a galvanic cell. It can be expressed by using the formula:

$\mathbf{E_{cell} = E_o - \dfrac{0.059}{n} \times log \dfrac{[Fe^+]}{[Mn^{2+}]}}$