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seraphim [82]
3 years ago
7

you have a lead ball with a mass of 420 g. the density of lead is 10.5 g/cm³. what is the volume of the ball

Chemistry
1 answer:
IrinaK [193]3 years ago
7 0

Answer:

The answer is

<h2>40.0 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}

From the question

mass = 420 g

density = 10.5 g/cm³

The volume is

volume =  \frac{420}{10.5}  \\

We have the final answer as

<h3>40.0 mL</h3>

Hope this helps you

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2.
Lubov Fominskaja [6]

Explanation:

Electronic Configuration for Li: 1s²2s¹

Electronic Configuration for Cl: [Ne]3s²3p⁵

When Lithium and Chlorine bonds together, the electron in the Lithium 2s subshell will be transfered to the Chlorine 3p subshell, giving both the Lithium and Chlorine atoms a complete 1st and 3rd energy levels respectively.

Formula for Lithium chloride: LiCl.

7 0
2 years ago
How could you use
ExtremeBDS [4]

Answer:

The procedure with the  simple calorimeter to  compare the energy released  by different fuels is described below in detail.

Explanation:

If the response delivers heat (rxn < 0), then heat is consumed by the calorimeter (calorimeter > 0), and its temperature improves. Conversely, if the response consumes heat (rxn > 0), suddenly heat is carried from the calorimeter to the arrangement (calorimeter < 0), and the temperature of the calorimeter drops.

8 0
3 years ago
How many moles of iron are in 50.0g of iron? How many iron atoms are in 59.0g of iron?
Julli [10]

Answer:

50.0 \div 59.0 = 10

right

7 0
2 years ago
Why does increasing the temperature of a reaction cause the reaction rate to increase?
marissa [1.9K]

Answer:

The correct answer is "Increased energy enables more particles to collide."

Explanation:

The reaction rate is defined as the change in the concentration of one of the reagents or products, in a time interval in which the change takes place.

For a chemical reaction to take place, the molecules of the reagents must collide, and must also collide effectively. In other words, these shocks must be produced with sufficient energy so that they can break and form chemical bonds. In the crash there must be proper orientation.

When increasing the temperature, the molecules will possess greater kinetic energy, which is that energy related to the movement of the molecules. Consequently, these molecules will move faster.Thus, the possibility of colliding with another molecule increases significantly. In this way, the reaction rate increases.

So, <u><em>the correct answer is "Increased energy enables more particles to collide."</em></u>

3 0
3 years ago
Read 2 more answers
A solution used to chlorinate a home swimming pool contains 7% chlorine by mass. An ideal chlorine level for the pool is one par
deff fn [24]

Answer:

Volume of chlorine = 61.943 mL

Explanation:

Given:

Volume of the water in the Pool = 18,000 gal

also,

1 gal = 3785.412 mL

thus,

Volume of water in pool = 18,000 × 3785.412 = 68,137,470 mL

Density of water = 1.00 g/mL

Therefore,

The mass of water in the pool = Volume × Density

or

The mass of water in the pool = 68,137,470 mL × 1.00 g/mL = 68,137,470 g

in terms of million = \frac{\textup{68,137,470}}{\textup{ 1,000,000}}

or

= 68.13747 g

also,

1 g of chlorine is present per million grams of water

thus,

chlorine present is 68.13747 g

Now,

volume = \frac{\textup{Mass}}{\textup{Density}}

or

Volume of chlorine = \frac{\textup{68.13747 g}}{\textup{1.10 g/mL}}

or

Volume of chlorine = 61.943 mL

3 0
3 years ago
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