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WARRIOR [948]
3 years ago
13

I need help with part b please and thank you

Chemistry
1 answer:
Zolol [24]3 years ago
4 0
Shampoo tubes are hollow tubes so things can be stored or used as a conducter as it is metal.
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Consider a 1260-kg automobile clocked by law-enforcement radar at a speed of 85.5 km/h. If the position of the car is known to w
-BARSIC- [3]
The expected speed is v = 85.5 km/h
 v = 85.5 km/h = (85.5 km/h)*(0.2778 (m/s)/(km/h)) = 23.75 m/s

If there is an uncertainty of 2 meters in measuring the position, then within a 1-second time interval:
The lower measurement for the speed is v₁ = 21.75 m/s,
The upper measurement for the speed is v₂ = 25.75 m/s.
The range of variation is
Δv = v₂ - v₁ = 4 m/s

The uncertainty in measuring the speed is
Δv/v = 4/23.75 = 0.1684 = 16.84%

Answer: 16.8%
3 0
2 years ago
How does hydrogen bonding affect the physical properties of substances?
alekssr [168]
The melting and boiling point depend on the strength of the ihydrogen bonds. Hydrogen bonding will cause the higher the melting and boiling points because more energy is needed to break bonds between molecules.
Hydrogen bonds affect solubility in water, molecules with hydrogen bonds dissolve better in water.
4 0
3 years ago
Stest will not impact your grade.
Diano4ka-milaya [45]
C. Spacecraft are built to be airtight.
5 0
2 years ago
Read 2 more answers
How many atoms are in 6.3 moles of lead
densk [106]

Answer:

3.79 x 10²⁴atoms

Explanation:

Given parameters:

Number moles of lead  = 6.3moles

Unknown:

Number of atoms  = ?

Solution:

To solve this problem,

              1 mole of a substance contains  6.02 x 10²³ atoms

            6.3 mole of Pb  will contain 6.3  x 6.02 x 10²³ = 3.79 x 10²⁴atoms

4 0
3 years ago
Given a 240.0 g sample of sulfur trioxide (MM = 80.1 g/mol),
labwork [276]

Answer:

2 mol of SO3 produces 1 mol O2

3 mol SO3 produces 3/2 mol of O2

so O2  produced = 1.5(32) =48 gm

Explanation:

8 0
2 years ago
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