3 years ago

F r eeeeee points take em alllll while u still can:P

Chemistry

2 answers:

Llana [10]3 years ago

6 0

Answer:

bro this is v poggers

Explanation:

Thank u very much i re epicc

olga nikolaevna [1]3 years ago

3 0

Thank you so much!!!

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If the density of mercury is 13.6g/ml, what is the mass in grams of 3426 ml of the liquid?

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Answer:

Explanation:

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Mass=13.6g/ml×3426ml

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Electromagnetic radiation with wavelength of 745 nm appears as red lighting to human eye. the energy of the photon is this light

trapecia [35]

Answer:The energy of the photon is this light is $2.66\times 10^{-19} Joules$ .

Explanation:

Wavelength of the electromagnetic radiation = 745 nm = $7.45\times 10^{-7} m$

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Energy of the photon will be given by Plank's equation:

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

$E=\frac{6.626\times 10^{-34} J s\times 3\times 10^8 m/s}{7.45\times 10^{-7} m}$

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The energy of the photon is this light is $2.66\times 10^{-19} Joules$ .

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4 years ago

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You need 2.5 mol of iron (fe) for an experiment. how many grams of iron must you measure out?

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The relationship between the mole and the mass of an element is given by this equation: mass in grams = moles * molar mass of iron
mass of iron needed = 2.5 * 56 = 140g.
Therefore, 140g of iron is needed.

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Scientist introducing a gene to the DNA of these fish that cause the fish to glow an example of which application of biotechnolo

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The correct answer is B

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