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Strike441 [17]
4 years ago
12

What is the density of an object that has a volume of 34.2 cm^3 and a mass of 19.6 g? (a) 0.573 g/cm^3 (b) 1.74 g/cm^3 (c) 670 g

/cm^3 (d) 53.8 g/cm^3 (e) 14.6 g/cm^3
Chemistry
1 answer:
KengaRu [80]4 years ago
8 0

Answer: The density of the object will be 0.573g/cm^3

Explanation:

Density is defined as the mass contained per unit volume.

Density=\frac{mass}{Volume}

Given : Mass of object = 19.6 grams

Volume of object= 34.2cm^3

Putting in the values we get:

Density=\frac{19.6g}{34.2cm^3}=0.573g/cm^3

Thus density of the object will be 0.573g/cm^3

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3 years ago
Draw the products of the complete hydrolysis of a ketal. draw all products of the reaction.
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How many moles of O2 are required to react completely with 1.396 g of Fe?
Gelneren [198K]

Answer:

moles O₂ needed = 0.19 mole

Explanation:

4Fe(s) + 3O₂(g) => 2Fe₂O₃(s)

1.396g Fe(s) = 1.396g/56g/mol = 0.025 mole Fe(s)

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5 0
3 years ago
What is the reaction rate at 1000 K K when the concentration of NO N O is increased to 0.12 M M , while the concentration of H2
marissa [1.9K]

Answer:

the reaction rate of 1,000 k is 17.28 m/s

Explanation:

The computation of the reaction rate in case when NO is increased to 0.12 M is shown below:

According to the question, data provided is as follows

NO = 0.12M

H_2 = 2.00\times 10^{-2} M

Based on the above information

Reaction rate is

= (6.0\times10^4)\times(0.12)^2\times(2\times10^{-2})

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Hence, the reaction rate of 1,000 k is 17.28 m/s and the same is to be considered

4 0
4 years ago
Can someone help me with this table thank u!
In-s [12.5K]
Krypton: Non-metal, inert gas
Zirconium:Metal, Transittion metal
Magnesium: Metal, Alkaline Earth metal
Chlorine: non-metal, halogen
Arsenic: semi-metal a.k.a metaloid
Helium: non-metal, inert gas
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Copper: metal, transition metal
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Hope that helps.
5 0
4 years ago
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