A chemical equation should be balanced, so that when you make calculations based on the equation you must be able to relate the products to the reactants or vice versa. An example of using equations for calculations in chemistry is with the subject stoichiometry.

7 0

4 years ago

What is the balanced equation for the reaction of lead (II) nitrate and sodium chloride?

Sindrei [870]

Answer:

Pb(NO3)2+2NaCl \to PbCl2+NaNO3

Explanation:

Lead(II) nitrate is $Pb(NO_{3})_{2}$

Sodium Chloride is $NaCl$

This is a double displacement reaction. Hence anions or cations of both the compounds are displaced to form the products.

$Pb^{+2}$ and $Cl^{-}$ combine to form PbCl_{2}$

$Na^{+} and \,NO_{3}^{-} combine\, to\, form\, NaNO_{3}$

Therefore the balanced equation is

$Pb(NO_{3})_{2}(aq)+2NaCl(aq) \to PbCl_{2}(s)+2NaNO_{3}(aq)$

3 0

4 years ago

Explain why the sunlight creates a pattern of decreasing temperature as someone moves from the equator towards areas at higher l

il63 [147K]

The angle of incoming solar radiation influences seasonal temperatures of locations at different latitudes. ... At higher latitudes, the angle of solar radiation is smaller, causing energy to be spread over a larger area of the surface and cooler temperatures.

7 0

3 years ago

A student placed four drops of water on a fresh slice of bread. Next the wet bread was placed inside a plastic bag and sealed up

Arte-miy333 [17]

Answer:

The answer would most likely be C 22 grams.

Explanation:

I did a small science experiment when I was in high school with mold and it did increase the weight of whatever food I was using but not that significant so I think it would be 22 grams.

3 0

3 years ago