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2 years ago

How many oxygen atoms are in Ba(MnO4)2?

Chemistry

2 answers:

vlabodo [156]2 years ago

5 0

Answer:

Explanation:

creativ13 [48]2 years ago

4 0

There are 8 oxygen atoms because of the subscript 2. 4 x 2= 8

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Which of the following is the best example of a physical system?

Natasha2012 [34]

A) a city would be bet

4 0

2 years ago

Research the Greenhouse effect and how it relates to heat transfer.

julsineya [31]

Answer:

The greenhouse effect is a phenomenon of radiative transfer, the process by which the energy of light waves is exchanged in matter. Radiative transfer dictates what energy is reflected, absorbed, and emitted. The greenhouse effect: A summary of the heat transfer in the Earth's atmosphere

Explanation:

trust me i have a huge brain and access to the internet

6 0

3 years ago

400. mg of an unknown protein are dissolved in enough solvent to make 5.00 mL of solution. The osmotic pressure of this solution

ch4aika [34]

<u>Answer:</u> The molecular weight of protein is $1.14\times 10^2g/mol$

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

or,

$\pi=i\times \frac{m_{solute}\times 1000}{M_{solute}\times V_{solution}\text{ (in mL)}}}\times RT$

where,

$\pi$ = Osmotic pressure of the solution = 0.0861 atm

i = Van't hoff factor = 1 (for non-electrolytes)

$m_{solute}$ = mass of protein = 400 mg = 0.4 g (Conversion factor: 1 g = 1000 mg)

$M_{solute}$ = molar mass of protein = ?

$V_{solution}$ = Volume of solution = 5.00 mL

R = Gas constant = $0.0821\text{ L atm }mol^{-1}K^{-1}$

T = temperature of the solution = $25^oC=[25+273]K=298K$

Putting values in above equation, we get:

$0.0861atm=1\times \frac{0.4g\times 1000}{M\times 100}\times 0.0821\text{ L. atm }mol^{-1}K^{-1}\times 298K\\\\M=1136.62g/mol=1.14\times 10^2g/mol$

Hence, the molecular weight of protein is $1.14\times 10^2g/mol$

4 0

3 years ago

Read the following chemical equation: Ti + 2Cl2 → TiCl4 Which statement best identifies and describes the reducing agent in the

goldenfox [79]

Answer: Ti is the reducing agent because it changes from 0 to +4 oxidation state.

Explanation:

Firstly, we need to identify the reducing agent and the oxidizing agent.

The reducing agent: is the agent that has been oxidized via losing electrons.

The oxidizing agent: is the agent that has been reduced via gaining electrons.

Here, Ti losses 4 electrons and its oxidation state is changed from 0 to +4 and Cl₂ gains one electron and its oxidation state is changed from 0 to -1.

So, Ti is the reducing agent because its oxidation state changes from 0 to +4.

Cl₂ is the oxidizing agent because its oxidation state changes from 0 to -1.

Thus, The right answer is Ti is the reducing agent because it changes from 0 to +4 oxidation state.

4 0

3 years ago

Please help I need help

slava [35]

Answer:

Covalent

Ionic

Explanation:

$CO_{2}$ - Covalent

Rest all of them are Ionic bonds in Nature.

7 0

3 years ago