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Olenka [21]
3 years ago
8

Calculate the mass, in grams, of each sample. a. 1.1 * 1023 gold atoms b. 2.82 * 1022 helium atoms c. 1.8 * 1023 lead atoms d. 7

.9 * 1021 uranium atoms
Chemistry
1 answer:
Vlada [557]3 years ago
5 0

Answer:blablablablablabla

Explanation:

Blablabla

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The molar mass of glucose is 180.2 g/mol. How many grams of glucose will be produced when 132.0 g of CO2 reacts with an excess o
andriy [413]

Answer:

The mass in grams of glucose produced when 132.0 g of CO2 reacts with an excess of water is 90.1 grams

Explanation:

The chemical equation for the reaction is

6H₂O + 6CO₂  → C₆H₁₂O₆ + 6O₂

From the reaction, it is seen that 6 moles of H₂O reacts ith 6 moles of CO₂ to produce 1 mole of glucose  C₆H₁₂O₆ and 6 moles oxygen gas

The molar mass of CO₂ = 44.01 g/mol

There fpre 132.0 g contains 132.0/44.01 moles or ≅ 3 moles

However since 6 moles of CO₂ produces 1 mole of O₂, then 3 moles of CO₂ will prduce 1/6×3 or 0.5 moles of C₆H₁₂O₆

and since the molar mass (or the mass of one mole) of C₆H₁₂O₆ is 180.2 grams/mole then 0.5 mole of C₆H₁₂O₆ will have a mass of

mass of 1 mole C₆H₁₂O₆ = 180.2 g

mass of 0.5 mole C₆H₁₂O₆ = 180.2 g × 0.5 = 90.1 grams

Mass of glucose produced = 90.1 grams

7 0
3 years ago
Suppose you are titrating an acid solution with a base solution of known concentration. To calculate the concentration of the ac
Arturiano [62]

Answer:

i would say use 2

Explanation:

4 0
3 years ago
Why are deposits of pure sodium metal or pure potassium metal not seen in nature
Natasha2012 [34]
<span>They are not seen in nature because they are always combined with something to make something else.</span>
5 0
3 years ago
If a laser light is compose of photons each with an energy of 4.58 × 10−19 J, what is the photon energy of this light in units o
kap26 [50]

Answer : The photon energy of this light in units of nanometers, (nm) is, 4.34\times 10^{-2}nm

Solution :

Formula used :

E=\frac{h\times c}{\lambda}

where,

E = energy of photon = 4.58\times 10^{-19}J

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

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

\lambda = wavelength = ?

Now put all the given values in the above formula, we get:

4.58\times 10^{-19}J=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{\lambda}

\lambda=4.3017\times 10^{-7}m=434.017\times 10^{-9}m=434.017nm=4.34\times 10^{-2}nm

conversion used : (1nm=1\times 10^{-9}m)

Therefore, the photon energy of this light in units of nanometers, (nm) is, 4.34\times 10^{-2}nm

5 0
3 years ago
White blood cells are most closely associated with witch two body systems ?
Arturiano [62]

Answer:

The immune system. The immune system helps the body defend itself against infection.

Explanation:

7 0
2 years ago
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