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grin007 [14]
3 years ago
9

What volume, in liters, would 88.9 grams of a substance occupy if it’s density is 2.38 g/mL

Chemistry
1 answer:
Assoli18 [71]3 years ago
6 0

Answer:

V = 0.03735 mL

Explanation:

Given that,

Mass of a substance, m = 88.9 grams

Density of a substance, d = 2.38 g/mL

We need to find the volume occupied by the object. The density of an object is given by mass per unit volume.

d=\dfrac{m}{V}\\\\V=\dfrac{m}{d}\\\\V=\dfrac{88.9}{2.38}\\\\V=37.35\ mL\\\\V=0.03735\ L

So, the volume of the substance is 0.03735 mL.

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8. Sulfur has a first ionization energy of 1000 kJ/mol. Photons of what frequency are required to ionize one mole of Sulfur?​
Lynna [10]

Answer:

the frequency of photons v = 1.509\times10^{39}Hz

Explanation:

Given:  first ionization energy of 1000 kJ/mol.

No. of moles of sulfur = 1 mole

\Delta E_1 = 1000KJ/mol

We know that plank's constant

h = 6.626\times10^{-34} Js

Let the frequency of photons be ν

Also we know that ΔE = hν

this implies ν = ΔE/h

= \frac{10^6J}{6.626\times10^{-34} Js}

v = 1.509\times10^{39}Hz

Hence, the frequency of photons v = 1.509\times10^{39}Hz

6 0
3 years ago
Bananas Foster is an example of a dessert that is flambéed. A Bananas Foster label states the accepted number of Calories to be
WINSTONCH [101]

Answer:

6.00%

Explanation:

Step 1: Given data

Accepted value for the number of calories in a Bananas Foster: 300 calories

Measured value for the number of calories in a Bananas Foster: 318 calories

Step 2: Calculate the percent error in the measure

We will use the following expression.

%error = |accepted value - experimental value|/ accepted value × 100%

%error = |300 cal - 318 cal|/ 300 cal × 100% = 6.00%

4 0
3 years ago
a molecule of two nitrogen atoms and four oxygen atoms what is the molecule formula for this compound
kiruha [24]
The formula would be N2O4
6 0
3 years ago
Read 2 more answers
Which of the following uses a nonrenewable energy source to generate energy
storchak [24]
The answer would be B
3 0
3 years ago
Read 2 more answers
How many moles of coF3 are produced when 1.25 moles of 3co reacts
oee [108]

Answer:

1.25 moles

Explanation:

First, we need to balance the equation. Essentially, this means making sure we have the same number of each atom on each side.

On the left side, we currently have:

- 1 Co atom

- 2 F aomts

On the right side, we have:

- 1 Co atom

- 3 F atoms

To balance it, add a 2 to Co on the left, 3 to F2 on the left, and 2 to CoF3 on the right:

2Co+3F_2 → 2CoF_3

Now, we have 1.25 moles of Co, and since the ratio between Co and CoF3 is 1:1, we also have 1.25 moles of CoF3.

Thus, the answer is 1.25 moles.

7 0
3 years ago
Read 2 more answers
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