Identify which of the following is a complete and balanced chemical equation

Answers

Answer 1

Answer:

Answer:

because a complete equation must have all the elements present on the left hand side of the arrow on the right hand side of the arrow as well, and to be balanced there must be the same number of each type of atom, so both A and C are full equations, but A is not balanced because although there are two oxygen atoms on each side of the arrow, there is only one hydrogen atom on the left and two on the right, thus the right hand side is 'heavier' than the left and the equation is unbalanced.

Explanation:

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What's 7y^2 - y^2? HELP!

Answers

Hey there...
Let's solve this problem by steps.

Method 1 -
Step 1 --> Taking GCF
$y^2 ( 7 - 1 )$

Step 2 ---> Combining like terms
$y^2 ( 6)$

Or

$6y^2$ is your final answer.

Method 2 -
We can straight way subtract $y^2$ from $7y^2$ which is
$7y^2 - y^2$
$=\ \textgreater \ 6y^2$

Hope it helped you.. :)

7y^2 - y^2 = 6y^2 i think!

Why don't the present shapes of the continents fit perfectly into the supercontinent?

Answers

The reason why the shapes of the continents as of today do not perfectly fi into to super continent because long time ago the super continent was scattered into pieces. And as times go by, those smaller parts of super continents undergo soil erosion caused by the water and other way that causes their original shapes change.
Thus, if we are going to judge now if those smaller part of super continent, they’re no longer gonna fit perfectly because through time their original form changed

a bus travelling on a straight road at 25m/s accelerates uniformly at 5m/s squared for 2 seconds. find its speed in kilometres per hour

Answers

Answer:

126 kmh⁻¹

Explanation:

We can simply solve this by applying motion equations

where

v - final velocity

u - initial velocity

a-acceleration

t - time

v = u + at

= 25 + 5×2 = 35 ms⁻¹

= (35/1000)×3600 = 126 kmh⁻¹

Which term identifies the effects of the buildup of stationary electric charges on everyday objects caused by the transfer of electrons fromone object to another? A. stationary electricity B. current electricity C. magnetic electricity D. static electricity

Answers

D static Electicity....

Answer:Static Electricity

Explanation:

How do liquid water , ice and water vapor differnt from eachother

Answers

ice is a solid and then it has to turn into a liquid to eveaporat and liquid water just evaporates

How is science used by a pharmcist

Answers

They have to understand the symptoms if this i s a cure for the medicines i think

to mix different chemicals in order to make a substance which can be tested and turned into a medicine

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