A graduated cylinder holds 100 mL of water. A lead weight is dropped into the cylinder bringing the new volume up to 450 mL. If
1 answer:
11.43g/mL
Explanation:
Given parameters:
Volume of water in the graduated cylinder = 100mL
Volume of water + lead weight = 450mL
Mass of lead weight = 4000g
Unknown:
Density of the lead weight = ?
Solution:
Density is the mass per unit volume of a body.
Density =
Volume of the lead weight = volume of water displaced
Volume of lead weight = 450 - 100 = 350mL
Density = = 11.43g/mL
learn more:
Density brainly.com/question/2690299
#learnwithBrainly
You might be interested in
4.743 x s-1 is the value of the rate constant.
The Arrhenius equation describes the relationship between the rate of reaction and temperature for many physical and chemical reactions.
As per Arrhenius equation,
k = Ae-Ea÷RT
T = 227 = 500.15 K
R = 0.008314 kJ/K mol
Ea = 150 kJ/mol
Ea÷RT
= 150÷(0.008314 x 500.15)
= 36.073
k = Ae-36.073 = (2.2 x s-1) (2.156 x
)
k = 4.743 x s-1
So, the correct answer is option d) i.e. 4.7 x s-1
As per Arrhenius equation,
k = Ae-Ea/RT
T = 227 = 500.15 K
R = 0.008314 kJ/K mol
Ea = 150 kJ/mol
Ea÷RT = 150÷(0.008314 x 500.15) = 36.073
k = Ae-36.073 = (2.2 x s-1)(2.156 x
)
k = 4.743 x s-1
Hence, 4.743 x s-1 is the value of the rate constant.
Learn more about the Arrhenius equation here:
#SPJ1