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3 years ago

Compared to the physical and chemical properties of the compound NO2, the compound N2O has

Chemistry

1 answer:

Lelu [443]3 years ago

8 0

Answer:

Explanation:

The two compounds have different physical properties and different chemical properties despite the fact that they are formed from nitrogen and oxygen.

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Element R and Element Q have the same number of valence electrons. These elements have similar chemical behavior, but element R

I am Lyosha [343]

Answer:

I dont now because I am in 6 class

7 0

3 years ago

Which of the following numbers count as exact numbers and do not count when determining significant figures in a calculation? 1.

rewona [7]

Answer :

(1) Density do not count as exact number.

(2) Volume count as exact number.

(3) Length count as exact number.

(4) Speed do not count as exact number.

(5) Number count as exact number.

(6) Mass do not count as exact number.

Explanation :

Exact numbers : It is a defined or integer value which comes from counting numbers of objects.

They have an infinite number of significant figures.

For example : 12 eggs in a dozen, 1000 g in a kilogram and 2.54 cm in an inch.

Now we have to determine the following numbers count as exact numbers.

(1) Density : 3.7 g/mL

Density do not count as exact number.

(2) Volume : 1000 mL/L

Volume count as exact number.

(3) Length : 2.54 cm/in

Length count as exact number.

(4) Speed : 65.2 km/hr

Speed do not count as exact number.

(5) Number : 14 aardvarks

Number count as exact number.

(6) Mass : 38.741 g

Mass do not count as exact number.

4 0

3 years ago

What is special about the kelvin temperature scale

nalin [4]

Kelvin is a temperature scale designed so that zero degrees K is defined as absolute zero (at absolute zero, a hypothetical temperature, all molecular movement stops - all actual temperatures are above absolute zero) and the size of one unit is the same as the size of one degree Celsius.

5 0

3 years ago

Which scientist bombarded gold sheets with alpha particles to look at the atom?

Alekssandra [29.7K]

the correct scientist is rutherford

6 0

3 years ago

Draw the structures of the two monomers that react together to form this polyurethane polymer

matrenka [14]

The monomers that react together to form polyurethane polymer are diisocyanate and diol.

<h3>What are polymers?</h3>

Polymers are a class of natural or synthetic substances
It is made up of small units called monomers arranged in a repeated pattern to form large molecules called macromolecules
Cellulose and resins are examples of natural polymers
Polyethylene and polychloroprene are examples of synthetic polymers.

Polyurethane polymer is made up of monomers diisocyanate and diol. It is mostly used in home furnishing in flexible form. The structures of monomers are as follows:

Learn more about polymers:

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7 0

2 years ago