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LUCKY_DIMON [66]
3 years ago
6

A sample of gold has a mass of 96.5 g and a volume of 5.00 cm3. What is the density of gold in g/cm3

Chemistry
1 answer:
viva [34]3 years ago
4 0

Answer: The density would be p = 19.3 g/cm3 because

Explanation:  because if you calculate density the formula would be d = <u>m</u>

                                                                                                                             v

so just use the values giving and you get the answer  by plugging the 96.5 mass then 5 for the volume then divide it.

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The reaction 2a → a2​​​​​ was experimentally determined to be second order with a rate constant, k, equal to 0.0265 m–1min–1. if
katovenus [111]

The integrated rate law for a second-order reaction is given by:

\frac{1}{[A]t} =   \frac{1}{[A]0} + kt

where, [A]t= the concentration of A at time t,

[A]0= the concentration of A at time t=0

<span>k =</span> the rate constant for the reaction


<u>Given</u>: [A]0= 4 M, k = 0.0265 m–1min–1 and t = 180.0 min


Hence, \frac{1}{[A]t} = \frac{1}{4} + (0.0265 X 180)

<span>                                        = 4.858</span>

<span><span><span>Therefore, [A]</span>t</span>= 0.2058 M.</span>

<span>
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<span>Answer: C</span>oncentration of A, after 180 min, is 0.2058 M

7 0
3 years ago
Read 2 more answers
During strenuous exercise, the NADH formed in the glyceraldehyde 3-phosphate dehydrogenase reaction in skeletal muscle must be r
vekshin1

Answer:

The answer is pyruvate → lactate

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3 years ago
How many grams are in 44.8 liters of nitrogen gas, n2?<br> a) 56g<br> b) 27g<br> c) 36g<br> d) 112g
kkurt [141]

a) 56g

<h3>Calculation:</h3>

At STP,

22.4 L of N₂ = 1 mol

We have given 44.8 L of N₂, therefore,

44.8 L of N₂ = \frac{44.8}{22.4}

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We know that,

1 mol of N₂ = 28 g

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2 mol of N₂ = 28 × 2

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Hence, there are 56 g of N₂ in 44.8 L of nitrogen gas.

Learn more about calculation at STP here:

brainly.com/question/9509278

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3 0
2 years ago
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The cell theory tells us that _____.
Lesechka [4]
The unified cell theory<span> states that: all living things are composed of one or more </span>cells<span>; </span>the cell<span> is the basic unit of life; and new cellsarise from existing </span>cells<span>. Rudolf Virchow later made important contributions to this </span>theory<span>. ... The cell is the fundamental unit of structure and function in living things

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3 years ago
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Answer:

Explanation:

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3 years ago
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