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love history [14]
3 years ago
6

(science)

Chemistry
2 answers:
Simora [160]3 years ago
7 0
The answer is B element symbols
ra1l [238]3 years ago
6 0

Answer:

b. . the element symbol

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What is the mass, in grams, of a pure gold cube that has a volume of 4.30 cm3?
umka21 [38]
The density of a pure gold is 19.32g/cm3
if the volume is 4.30 cm3 then we can calculate the mass using the formula mass=density x volume
mass=19.32*4.30
mass=83.076g
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An observation that does not deal with numbers?
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When a mixture of 12.0 g of acetylene (c2h2 and 12.0 g of oxygen (o2 is ignited, the resultant combustion reaction produces co2
valina [46]
The product of the complete combustion of any fuel (in this case, acetylene) are indeed water and carbon dioxide. 
Balancing the combustion reaction,
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The number of moles of C2H2 will be,
                        (12 g) x (1 mole/26 g) = 6/13 mole
Then, the number of moles of O2 is,
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Therefore the limiting reaction is the O2. Getting the amount of CO2 and H2O produced from balancing,
             CO2 = (3/8 moles) x (2 moles CO2/ 5/2 mole O2)(44 g/ 1 mole) = 52.8 g
             H2O = (3/8 moles) x (1 mole / 5/2 mole O2)(18 g / 1 mole) = 2.7 g
3 0
3 years ago
Read 2 more answers
What is the definition of electrical energy?
kherson [118]

Answer: Electrical energy is defined as an electric charge that lets work be accomplished. An example of electrical energy is power from a plug outlet. YourDictionary definition and usage example.

Explanation:

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HELP ASAP
Ket [755]

Answer:

Explanation:

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