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marysya [2.9K]
3 years ago
7

What is a substance so pure it cannot be broken down? *

Chemistry
1 answer:
Fiesta28 [93]3 years ago
8 0

Answer:

Element

Explanation:

This is a pure substance which can't be split into simpler substances by chemical means

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When the distance between two objects increases, the gravitational force between them _____.
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The force between them decreases
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4 years ago
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As a person BAC level increase it becomes difficult for them to judge their vehicle distances and speed
Eddi Din [679]

Answer:

TRUE

Explanation:

The blood alcohol content is also known as the blood alcohol level or the blood alcohol concentration. It is defined as the measurement of the alcohol intoxication in the body and is used for the legal or the medical purposes.

When the BAC increases in the person's body, the person started to loose clear vision, loss of short term memory, poor muscle coordination,  impaired perception and face difficulty in concentrating. Thus it becomes very difficult for a person to drive a car or ride a bike whose BAC has increased.

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Hence the answer is TRUE.

8 0
3 years ago
Tick the correct statement and cross the incorrect one.
geniusboy [140]

Answer:

First ine is true and the second one is False because rhinoceros is found mostly in Chitwan national park in terai region .

1 . plants and animals

2 . plants and animals (primary consumers on plants and secondary consumers on both )

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4 . ?? flora or fauna is your question been asked ?

5 . climate variation

6 0
3 years ago
The ____________ bonds in bromine, Br2, allows for complete dissolving but not dissociation cyclohexane. Bromine will not dissol
pishuonlain [190]
The answer would be non-polar covalent.
Bromine is a non-metal, making the bond covalent.
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3 0
3 years ago
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Hydrogen is prepared commercially by the reaction of methane and water vapor at elevated temperatures. CH₄(????) + H₂O(????) ⇌ 3
sammy [17]

Answer:

6.2846

Explanation:

Given that:-

Concentrations at equilibrium :-

[CH_4]=0.126\ M

[H_2O]= 0.242\ M

[CO]= 0.126\ M

[H_2]= 1.15\ M

The equilibrium reaction is:-

CH_4+H_2O\rightleftharpoons 3H_2+CO

The expression for equilibrium constant is:

K_{c}=\frac {\left [ H_2 \right ]^3\left [ CO \right ]}{\left [ CH_4 \right ]\left [ H_2O \right ]}

Applying the values as:-

K_c=\frac{1.15^3\times 0.126}{0.126\times 0.242}=6.2846

<u>The equilibrium constant for the reaction is:- 6.2846</u>

5 0
3 years ago
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