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3 years ago

1.

Chemistry

2 answers:

Blababa [14]3 years ago

5 0

Mtge answer is a malaria

svetoff [14.1K]3 years ago

3 0

2. Infectious
3. I think it is airborne

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What is Data Analysis?

cupoosta [38]

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3 years ago

Mass x height x gravity is the formula to calculate:

Sindrei [870]

Answer:

Potential energy

Explanation:

$p.e = mgh$

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3 years ago

What is the wavenumber of the radiation emitted when a hydrogen

LUCKY_DIMON [66]

Answer: Wavenumber of the radiation emitted is $0.08\times 10^{8}m^{-1}$

Explanation:

The relationship between wavelength and energy of the wave follows the equation:

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

where,

E = energy of the radiation = $1.634\times 10^{-18}J$

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of radiation = ?

Putting values in above equation, we get:

$1.634\times 10^{-18}J=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{\lambda}\\\\\lambda=12.16\times 10^{-8}m$

$\bar {\nu}=\frac{1}{\lambda}=\frac{1}{12.16\times 10^{-8}}=0.08\times 10^{8}m^{-1}$

Thus wavenumber of the radiation emitted is $0.08\times 10^{8}m^{-1}$

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4 years ago

Your experiment requires 150 mL of 7.7 M NaOH. How many grams of NaOH will you need?

Elodia [21]

You have molarity and you have volume. Use the formula :
Molarity(M)= Moles(N)/Liter(L) to get the solution.
150 ml= .150 L
7.7 = N/.150
N=.1.155 moles of NaOH.
And since you know the moles, use the molar mass to figure out the grams.
<span> (40g/mol NaOH) x (1.155mol) =
46.2 g of NaOH.</span>

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3 years ago

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denpristay [2]

Answer:what digital photo

Explanation:

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3 years ago