Answer:
yes
Explanation:
Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose.
Answer: Fe<em>(aq)</em>+S<em>(aq)</em>=FeS<em>(s)</em>
Explanation: The Sodium and Bromine are spectator ions because they don't react with anything, you can see this by writing the ionic equation like so:
1.) Molecular formula (given): FeBr2 (aq)+Na2S (aq)= FeS(s)+2NaBr(aq)
Each dissolved FeBr2 breaks up into one Fe with a charge of 2+ and two Br with a negative charge. This gives you:
Fe(aq)+ 2Br(aq)+Na2S(aq)=FeS(s)+2NaBr
2.) Now repeat what was shown with the other compounds in the given molecular formula, and pay attention to the states that each ion is in (solid, liquid, aqueous, gas) because this will give you the ionic equation, which from there you can get rid of any ions that don't change amount or state.
3.) Ionic formula: Fe(aq)+ <u>2Br(aq)</u>+<u>2 Na(aq)</u>+S (aq)=FeS(s)+<u>2 Na(aq)+2Br(aq)</u>
4.)When you've derived a total ionic equation (above), you'll find that some ions appear on both sides of the equation in equal numbers. For example, in this case two Na cations and two Br anions appear on both sides of the total ionic equation. What does this mean? It means these ions don't participate in the chemical reaction. They're present before and after the reaction. Nothing happens to them. So those are removed and you're left with the net ionic: Fe(aq)+S(aq)=FeS(s)
Hope this helps :)
Answer: 3.96L
Explanation:
PV = nRT
The way I like to do it, it's I get rid of whatever I do not need.
We have to do an equation for sure to make both sides equal and find our desired result.
The pressure is constant, so it would be constant in both sides, therefore, there is no point in using it.
The R is a constant used in both sides so there is no point on using it either.
We don't need to work with moles in this case, so let's forget about the moles.
Therefore we are left with only V (volume ) and T(Temperature)
Which would logically make this:
V1/T1 = V2/T2
OR
T1/V1 = T2/V2
Both of these would work, we always use whatever makes our calculations easier without complicating our lives with the algebra.
That should remind you of Charles' Law
Transform degrees into kelvins
20 + 273.15 = 293.15K
-15 + 273.15 = 258.15K
So, 4.5L/293.15K = V2/258.15K
V2 = (4.5L/293.15K) x 258.15K
V2 = 3.96L
Answer:
elecreonegativity is the attraction of a bonded atom for the pair of electrons in a covalent bond. this can occur if:
- the nuclear charges are different
- the atoms are different sizes
- the shared pair of electrons are closer to one nucleus than the other
