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nirvana33 [79]
3 years ago
13

A student is studying asbestos, a mineral that causes cancer in humans. One of the components of asbestos is silicon, a somewhat

reactive element, that is the second most abundant element found in the Earth’s crust. Which characteristic of silicon is most closely related to its chemical reactivity?
Chemistry
1 answer:
kondaur [170]3 years ago
6 0

Answer:

The characteristic of silicon that is most closely related to its chemical reactivity is that;

It is found in nature in mainly as oxides and silicates

Explanation:

Silicon, which is a member of group 14 of the periodic table has the electron configuration of [Ne]3s²3p² and has a high affinity for oxygen such that the the oxides are known as silicates and it is almost impossible to find pure silicon in nature and it is found in the universe as silica and silicates

Silicate minerals make up over 90% of the Earth's crust such that, by mass silicon is only surpassed by oxygen as the most abundant element found in the Earth's crust.

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which two quantities are used to predict gravitational force according to Newton's law of universal gravitation a. mass and spee
NISA [10]

Answer:

(b). Mass and distance.

Explanation:

The gravitational force between two objects is given by Newton's law of universal gravitation. The formula is as follows :

F=G\dfrac{m_1m_2}{r^2}

Here,

G is universal gravitational constant

r is the distance between two objects

It is very clear that the gravitational force is directly proportional to the product of masses and inversely proportional to the square of the distance between them.

Hence, the two quantities are used to predict gravitational force according to Newton's law of universal gravitation are mass and distance.

7 0
3 years ago
Two liters of hydrogen gas are stored at a
Tju [1.3M]

Answer:

the volume will expand

Explanation:

gas under pressure contracts, and expands with a lesser pressure

6 0
3 years ago
The reaction of nitrogen gas and oxygen gas to form nitrogen monoxide gas is shown below. If the measured concentrations of all
Anettt [7]

Answer:

The forward reaction is occurring at a faster rate than the reverse reaction.

Explanation:

Reaction quotient (Q) of the given reaction is -

                                     Q=\frac{[NO]^{2}}{[N_{2}][O_{2}]}

where [NO], [N_{2}] and [O_{2}] represents concentrations of respective species at a certain time.

Here [N_{2}]= 0.80 M, [O_{2}]= 0.050 M and [NO] = 0.10 M

So, Q=\frac{(0.10)^{2}}{(0.80)\times (0.050)}=2

Hence Q> K

It means that forward reaction is faster than reverse reaction at that point. Because then only concentration of NO is higher than concentrations of [N_{2}] and [O_{2}] which makes Q higher than K.

4 0
3 years ago
Cranberries and grapes may have therapeutic value. A cranberry company obtained the patent for a process to extract the oil from
zzz [600]

Answer is: C. The FDA tests give reliability to the results of improved health obtained by each company.

The FDA (The Food and Drug Administration) is a federal agency of the United States Department of Health and Human Services.

The FDA controls food safety, tobacco products, dietary supplements, prescription, pharmaceutical drugs, vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices, cosmetics and animal food.

5 0
3 years ago
Read 2 more answers
A sample of ideal gas at room temperature occupies a volume of 12.0 L at a pressure of 802 torr . If the pressure changes to 401
Blababa [14]

 The new  volume  is  2.4 L

<u><em> calculation</em></u>

The new volume is calculated using Boyle's  law formula

That  is  P₁V₁=P₂V₂

where,

p₁ =  802 torr

V₁ = 12.0 l

P₂ = 4010 torr

V₂=?

make  V₂ the subject of the formula  by diving  both side of equation by P₂

V₂ = P₁V₁/P₂

V₂  is therefore = {(12.0 l × 802 torr) 4010 torr}  = 2.4 L


7 0
3 years ago
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