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4 years ago

Write the correct name for each compound. a. N2O5 b. Si2F4 c. S3F d. OF2 e. H4P6 f. C2O4 g. HF3

Chemistry

1 answer:

PSYCHO15rus [73]4 years ago

3 0

Answer:

a. Boron trifluoride

b. Propane

c. Dinitrogen pentoxide

d. Carbon Dioxide

e. Silicon Octafluroride?

Explanation:

Glad to help :)

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5) When heated in a flame, the element Indium emits electromagnetic radiation with a distinctive indigo blue

grandymaker [24]

Answer:

$\lambda=451nm$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve this problem by using the following equation, defined in terms of energy, Planck's constant, wavelength and speed of light:

$E=\frac{hC}{\lambda }$

Thus, we solve for the wavelength as shown below:

$\lambda=\frac{hC}{ E}$

And finally plug in the energy, Planck's constant and speed of light to obtain:

$\lambda=\frac{6.6261 x 10^{-34} m^2 kg / s*3x10^8m/s}{4.405x10^{-19}m^2kg/s^2}\\\\\lambda=4.513x10^{-7}m*\frac{1nm}{10^{-9}m} \\\\\lambda=451nm$

Regards!

5 0

3 years ago

The vapor pressure of pure water at 250C is 23.77 torr. What is the vapor pressure of water above a solution that is 1.500 m glu

Olegator [25]

Answer:

Vapor pressure of water = 23.14torr

Explanation:

When you made a solution, vapor pressure decreases following Raoult's law:

$P_{solution} = X_{solvent} P_{solvent}$

<em>Where P is vapor pressure and X mole fraction</em>

As vapor pressure of water is 23.77torr we must find the mole fraction of water knowing the solution is 1.500m glucose (That is 1.500 moles of glucose per kg of water = 1000g of water).

1000g of H₂O are, in moles (Molar mass: 18.02g/mol):

1000g H₂O ₓ (1mole / 18.02g) = 55.5 moles of H₂O.

As we know now the solution contains 55.5 moles of water and 1.5 moles of glucose. Thus, mole fraction of water (Solvent) is:

$X_{H_2O} = \frac{55.5molesH_2O}{55.5molesH_2O + 1.5 molesGlucose} = 0.9737$

Replacing in Raoult's law, pressure of water above the solution is:

$P_{solution} = X_{solvent} P_{solvent}$

$P_{solution} = 0.9737*23.77torr$

<h3>Vapor pressure of water = 23.14torr</h3>

7 0

4 years ago

Determine the percent yield for the reaction between 28.1 g of Sb4O6 and excess C if 17.3 g of Sb is recovered along with an unk

hammer [34]

The answer is 73.71%. Hope I helped plus mark as brailiest ^-^

7 0

3 years ago

A rectangular fence is 3 times as long as it is wide. The perimeter is 60ft. Find the dimensions of the fence

Mashutka [201]

Answer:

The length of the fence is 22.5ft and the width of the fence is 7.5ft.

Explanation:

To solve this problem we will turn this question into an equation.

The equation for the perimeter of a rectangle is 2l + 2w = perimeter.

In the question we were given the perimeter so we can go ahead and plug this in.

2l + 2w = 60

In the question we are also told that the fence is 3 times as long as it is wide. This means that 1l = 3w. We can now subsitute l for 3w so that we only have one variable.

2(3w) + 2w = 60

Now we can simply use algebra to solve for w.

6w + 2w = 60

8w = 60

w = 7.5

Now that we know the value of w we can find the value of l since we know 1l = 3w.

l = 3w

l = 3(7.5)

l = 22.5

The length of the fence is 22.5ft and the width of the fence is 7.5ft.

7 0

3 years ago

I need help on my hw

Fittoniya [83]

I’m paying people to help me on mine if you know mine I can pay you a good amount of money if it’s right I have Apple Pay,cashapp,PayPal,Venmo

3 0

3 years ago