Answer:
Atoms
Explanation:
Elements are the chemical combinations of two or more atoms of the same kind
Answer:
based on this ball and stick model how many oxygen atoms are there in a milecule of 2 propanol
Explanation:
Answer:
The mass of S that reacted is 0.642g
Explanation:
In this case we have
⇒ mass of crucible and cover, 25.429g
⇒ mass of crucible, cover, and Pb, 29.465g
⇒ mass of crucible, cover and commass of crucible and coverpound formed, 30.107g
The mass of Pb reacted = mass of crucible, cover, and Pb - mass of crucible and cover = 29.465 - 25.429 = 4.036g
The mass of compound formed = mass of crucible, cover and commass of crucible and coverpound formed - mass of crucible and cover = 30.107 - 25.429g = 4.678g
The mass of S reacted = Mass of compound formed - mass of Pb reacted = 4.678 -4.036 = 0.642g
The mass of S that reacted is 0.642g
<h3><u>Given :-</u></h3>
<h3><u>To Find </u><u>:</u><u>-</u></h3>
<h3><u>Solution:- </u></h3>
When the object is placed in a graduated cylinder containing 175 ml of water, the water in the cylinder rises to a level of 187.5 ml , this implies that volume of content in the container has increased , the increased volume is volume of the object placed
So, Volume of object
= Increased Volume - Initial volume
= > 187.5 -175
= > 12.5 ml
Since 1 ml = 1 cm³ we can write
12.5 ml = 12.5 cm³
Now,
Putting Values -
>> The density of the material is 2.6 g/cm³
Answer:
34.6 cm³
Explanation:
Given data
- Mass of carbon tetrachloride (m): 55.0 g
- Density of carbon tetrachloride (ρ): 1.59 g/cm³
- Volume of carbon tetrachloride (V): ?
We can determine the volume of carbon tetrachloride that the student should pour out using the following expression.
ρ = m / V
V = m / ρ
V = 55.0 g / (1.59 g/cm³)
V = 34.6 cm³
