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Mashcka [7]
3 years ago
7

BRAINLIEST IF ANSWERED IN THE NEXT 5M

Chemistry
1 answer:
belka [17]3 years ago
5 0
(NH₄)₂CO₃ → 2NH₄⁺ + CO₃²⁻
                      k=2        k=1
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A paragraph about Saturn.
Margaret [11]
Um so just a paragraph about Saturn?
3 0
3 years ago
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Giving brainiest to whoever answers correctly.
Digiron [165]

Answer:250

Explanation:

5 0
3 years ago
Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 546 nm.
Alona [7]

Answer: The frequency of the green light emitted by a hydrogen atom with a wavelength of 546 nm is 5.49 \times 10^{14} s^{-1}.

Explanation:

Given: Wavelength = 546 nm (1 nm = 10^{-9} m) = 546 \times 10^{-9} m

The relation between frequency and wavelength is as follows.

\nu = \frac{c}{\lambda}

where,

\nu = frequency

c = speed of light = 3.0 \times 10^{8} m/s

\lambda = wavelength

Substitute the values into above formula as follows.

\nu = \frac{c}{\lambda}\\= \frac{3.0 \times 10^{8} m/s}{546 \times 10^{-9} m}\\= 5.49 \times 10^{14} s^{-1}

Thus, we can conclude that the frequency of the green light emitted by a hydrogen atom with a wavelength of 546 nm is 5.49 \times 10^{14} s^{-1}.

4 0
3 years ago
Ethylene glycol is used as an antifreeze in car. if 400 g of ethylene glycol is added to 4.00 kg of water, what is the molaity?
Illusion [34]
Data:

solute: ethylene glicol => not ionization

molar mass of ethylene glicol (from internet)  = 62.07 g/mol

solute  = 400 g

solvent = water = 4.00 kg

m =?

ΔTf = ?

Kf = 1.86 °C/mol

Formulas:

m: number of moles of solute / kg of solvent

ΔTf = Kf*m

number of moles of solute = mass in grams / molar mass

Solution

number of moles of solute = 400 g / 62.07 g/mol = 6.44 moles

m = 6.44 mol / 4 kg = 1.61 m <-------- molality (answer)

ΔTf = 1.86 °C / m * 1.61 m = 2.99 °C <---- lowering if freezing point (answer)
8 0
3 years ago
Elements with a high ionization energy lose electrons easily (True or False).
professor190 [17]

Answer:

False

Explanation:

8 0
3 years ago
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