Answer:
Number of protons equals the number of neutrons
It is incorrect, because the identity of the original product has changed. Ca3(OH)2 does not exist! It is no longer calcium hydroxide. To balance an equation, you must manipulate the coefficients, a.k.a. the big numbers that go before reactants or products. Subscripts, the little numbers inside the reactants or products, cannot be changed without completely changing the substance.
Answer: D. 10 degree angle
All places on Earth
received sunlight but in different angles. The smallest area, which is the
north of the Arctic Circle receive sunlight at a 10 degree angle because of the tilted axis
of rotation. Usually, the sun’s
rays are the most intense at the equator and the least intense at the poles as
Earth revolves around the sun.
The third option seems correct. Using any bag more than once will help in decreasing the carbon foot print.
This isds beause, if you use paper bag once only, then paper bag is being utilised and more and more paper is being used. So the best way is to use the bag more than once, whichever bag u are using.
Answer:
<em>Physical change is a temporary change. A chemical change is a permanent change</em>
<em>examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.</em>
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I HOPE THIS WILL HELP YOU</h3>
HAVE A GREAT DAY :)
