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kiruha [24]
3 years ago
10

Are erasers made from rubber?

Chemistry
2 answers:
Sunny_sXe [5.5K]3 years ago
6 0
YES!
Most erasers are made from synthetic rubber
svlad2 [7]3 years ago
3 0
<span> Less expensive </span>erasers<span> are </span>made<span> from synthetic </span>rubber<span>, but more expensive or specialized </span>erasers<span> are vinyl, plastic, or gum-like materials </span>
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Draw the lewis structure for the molecule ch3ch2cch. how many sigma and pi bonds does it contain?
babunello [35]
Answer:
             The structure of 1-Butyne is shown below and it contains;

                                         Nine Sigma Bonds

                                             Two Pi Bonds

Explanation:
                     
In given structure the sigma bonds are highlighted with blue colour and pi bonds are highlighted by Black colour and indicated by red arrows.
                     Remember the very first covalent bond between two atoms is always the sigma bond. After formation of sigma bond if further p orbitals with unpaired electrons are available they will form pi bond, or two pi bonds as in given scenario.

7 0
3 years ago
Two conditions are required for cloud formation:cooling of the air and
Lelechka [254]

Answer:

Presence of water molecules

Explanation:

Temperature decreases with an increase in altitude. At sufficiently high altitudes, the air is much colder than the air on the surface of the Earth. Water vapor has a low density and is capable to rise until it gets into a medium with a significantly low temperature and pressure to condense and produce water droplets out of water vapor. Those droplets then form clouds.

5 0
3 years ago
Glacial striations have been found in South America, South Africa, India, and Australia. What do these marks tell scientist?
zubka84 [21]
These mars can tell the scientist that there are still a lot of things that they can not discover. The glaciation can also tell us about the alignment of the earth and not just it can tell us about the climate. That is why it is really important for the scientist to study keenly in this kind of matters.
7 0
3 years ago
Read 2 more answers
Equation for the reaction of water and HCL(g)
Elina [12.6K]
HCl + H2O---> H3O+ Cl-
7 0
3 years ago
A piece of gold ingot with a mass of 301 g has a volume of 15.6 cm3 . calculate the density of gold.
Fantom [35]

Answer:

            19.29 g.cm⁻³

Solution:

Data Given:

                             Mass  =  301 g

                             Volume  =  15.6 cm³

Formula Used:

                             Density  =  Mass ÷ Volume

Putting values,

                             Density  =  301 g ÷ 15.6 cm³

                            Density  =  19.29 g.cm⁻³

6 0
3 years ago
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