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velikii [3]
2 years ago
8

What volume will 50.2 grams of co2 (g) occupy at stp?

Chemistry
1 answer:
Genrish500 [490]2 years ago
8 0
Number of moles of CO2 =
Mass /Ar
= 50.2 / (12 + 32)
1.14 mols

For every 1 mol of gas, there will be
24000 cm^3 of gas

Vol. = 1.14 x 24 dm^3
= 27.36 dm^3
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The blue color in some fireworks occurs when copper(I) chloride is heated to approximately 1500 K and emits blue light of wavele
Art [367]

Given that,

Temperature, T = 1500 K

Wavelength, \lambda=4.5\times 10^2\ nm

To find,

The energy of one photon of this light.

Solution,

We know that, the energy of a photon is given by the formula as follows :

E=\dfrac{hc}{\lambda}\\\\E=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{4.5\times 10^2\times 10^{-9}}\\\\=4.42\times 10^{-19}\ J

So, the required energy is 4.42\times 10^{-19}\ J.

4 0
2 years ago
Fill in the blanks with the word that best completes each statement. Scientists develop knowledge by making ------------about th
kotegsom [21]

Answer:

1. observations

2. hypothesis

3. experimentation

Explanation:

Observations are made, Hypothesies are formed from observations, and experimnets help alter and comfirm hypothesis.

3 0
2 years ago
A laboratory utilizes a mixture of 10% dimethyl sulfoxide (DMSO) in the freezing and long-term storage of embryonic stem cells.
Mars2501 [29]

Answer:

The correct answer is "1.0100".

Explanation:

Let the volume of mixture be 100 ml.

then,

The volume of DMSO will be 10 mL as well as that of water will be 90 mL.

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= 10\times 1.1004

= 11.004 \ g

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= 90+11.004

= 101.004 \ g

Density of mixture will be:

= \frac{Mass}{Volume}

= \frac{101.004}{100}

= 1.01004 \ g/mL

hence,

Specific gravity of mixture will be:

= \frac{Density \ of \ mixture}{Density \ of \ water}

= \frac{1.01004}{1}

= 1.0100

3 0
2 years ago
(f) what is the observed rotation of 100 ml of a solution that contains 0.01 mole of d and 0.005 mole of l? (assume a 1-dm path
never [62]
<span>Answer: .01 moles of D to .005 moles of L ~ so, .01+.005 = .015 total; using this total value, divide the portions of D and L. so .01/.015 to .005/.015 ~ 67% D to 33% L. And thus, the enantiomer excess will be 34%.</span>
4 0
2 years ago
Read 2 more answers
The distance between the atoms of H−I is 1.61Å. What is the distance in meters?
frosja888 [35]
<span>the answer is 
1A = 10^-10 m
so </span>1.61Å =  1.61  x 10^-10 m
he distance between the atoms of H−I is 1.61  x 10^-10 m
8 0
2 years ago
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