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skelet666 [1.2K]

3 years ago

10

If we’re interested in knowing the rate at which light energy is received by a unit of area on a particular surface we’re really

trying to figure out the

1 answer:

Marysya12 [62]3 years ago

3 0

Answer:

We are trying to figure out the Intensity of Light

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What is the correct name for MgF2?

ANTONII [103]

MgF₂ ( <span>Magnesium fluoride )

hope this helps!</span>

3 0

3 years ago

Which statement best describes saturation?

sp2606 [1]

statement c would be correct I think.

8 0

3 years ago

Read 2 more answers

Vitamin C contains only carbon, hydrogen, and oxygen. When a 1.00 g was combusted, 1.4991 g of CO2 and 0.4092 g of H2O were obta

Alina [70]

The empirical formula for this vitamin : C₃H₄O₃

<h3>Further explanation </h3>

The empirical formula is the smallest comparison of atoms of compound =mole ratio of the components

The principle of determining empirical formula

Determine the mass ratio of the constituent elements of the compound.
Determine the mole ratio by dividing the percentage by the atomic mass

Mass of C in CO₂ :(MW C = 12 g/mol, CO₂=44 g/mol)

$\tt \dfrac{12}{44}\times 1.4991=0.409~g$

Mass of H in H₂O :(MW H = 1 g/mol, H₂O = 18 g/mol)

$\tt \dfrac{2.1}{18}\times 0.4092=0.0455~g$

Mass O = Mass sample - (mass C + mass H) :

$\tt 1-(0.409+0.0455)=0.5455~g$

mol ratio C : H : O =

$\tt \dfrac{0.409}{12}\div \dfrac{0.0455}{1}\div \dfrac{0.5455}{16}\\\\0.0341\div 0.0455\div 0.0341\rightarrow 1\div 1.33\div 1=3\div 4\div 3$

5 0

3 years ago

Incorporating ingredients by gently turning one part over another with rubber scraper is.

Delvig [45]

IMixing combined with skip voting

7 0

2 years ago

Mercury has an atomic mass of 200.59 amu. calculate the mass of 3.0 x 10^10 atoms

Licemer1 [7]

To determine mass of the given number of atoms of mercury, we need a factor that would relate the number of atoms to number of moles. In this case, we use the Avogadro's number. It is a <span>number that represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. The number of units could be atoms, molecules, ions or electrons. To convert into mass, we use the given amu of mercury since it is equal to grams per mole. We calculate as follows:

</span>3.0 x 10^10 atoms ( 1 mol / 6.022 x 10^23 atoms ) ( 200.59 g / 1 mol ) = 9.99x10^-12 g Hg

5 0

3 years ago