What is the molarity of a 500.0 ml solution containing 0.75 moles of solute?

About the instruction that marko gave to hinano

Elden [556K]

Answer: he gave him a map of somewhere

Explanation:

3 0

2 years ago

Compare the root mean square speeds of O2 and UF6 at 65 degree Celsius

gayaneshka [121]

<h3>Answer:</h3>

The root mean square speeds of O₂ and UF₆ is 513m/s and 155 m/s respectively.

<h3>Solution and Explanation:</h3>

To find how fast molecules or particles of gases move at a particular temperature, the root mean square speed is calculated.
Root mean square speed of a gas is calculated by using the formula;

$Root mean square=\sqrt{ \frac{3RT}{M}$

Where R is the molar gas constant, T is the temperature and M is the molar mass of gas in Kg.

<h3>Step 1: Root mean square speed from O₂</h3>

Molar mass of Oxygen is 32.0 g/mol or 0.032 kg/mol

Temperature = 65 degrees Celsius or 338 K

Molar gas constant = 8.3145 J/k.mol

$Root mean square speed = \sqrt\frac{(3)(8.3145)(338K)}{0.032}$

$= 513.289 m/s$

<h3>Step 2: Root mean square speed of UF₆ </h3>

The molar mass of UF₆ is 352 g/mol or 0.352 kg/mol

$Root mean square speed = \sqrt\frac{(3)(8.3145)(338K)}{0.352}$

$= 154.762m/s$

Therefore; the root mean square speeds of O₂ and UF₆ is 513m/s and 155 m/s respectively.

7 0

2 years ago

Mass defect for oxygen-16 = 0. 13261 amu How many kilograms does the mass defect represent? 1. 66 × 10-27 kg 2. 20 × 10 -28 kg 3

Zepler [3.9K]

Mass defect for oxygen-16 = 0. 13261 amu, in the kilograms the mass defect equals to 2.20 × 10⁻²⁸ kg.

<h3>What is mass defect?</h3>

Mass defect is the difference between the mass of of an whole atom and the combined mass of its individual particles present in that atom.

We know that, 1 amu = 1.6 × 10⁻²⁷ kg

Given that, mass defect for oxygen-16 = 0.13261 amu

To calculate this defect in terms of kilograms, we have to convert into kg unit as:

0.13261 amu = 0.13261 amu × 1.6 × 10⁻²⁷ kg/amu

0.13261 amu = 2.20 × 10⁻²⁸ kg

Hence option (2) is correct.

To know more about Mass defect, visit the below link:

brainly.com/question/4334375

7 0

1 year ago

GIVING BRAINLIEST!!! A student observes a beaker of room temperature water resting on a table. She states that the beaker of wat

defon

Answer:

a

Explanation:

im thinking because the water is a room temperature there shouldnt be anm immence amount og heat energy for it to have a good amount of energy tho i could be wrong because its not moving it could have no energy.

8 0

2 years ago

Read 2 more answers

A 93-L sample of dry air is cooled from 145 oC to -22 oC at a constant pressure of 2.85 atmospheres). What is the final volume?

Aloiza [94]

Answer: 55.84L

Explanation: Please see attachment for explanation.

3 0

2 years ago