Answer:
Based on the evidence, the layers, of which the fossils were discovered, the climate was a beach before becoming a forest.
Explanation:
Number of ions in the third beaker:
4 Cl⁻ ions
5 Na⁺ ions
1 OH⁻ ion
Explanation:
If you mix the backers the following chemical reaction will occur:
HCl + NaOH → NaCl + H₂O
In the ionic form you write the equation:
H⁺ (aq) + Cl⁻ (aq) + Na⁺ (aq) + OH⁻ (aq) → Cl⁻ (aq) + Na⁺ (aq) + H₂O (l)
where:
(aq) - aqueous (dissolved in water)
(l) - liquid
Number of ions in the first beaker:
4 Cl⁻ ions
4 H⁺ ions
Number of ions in the second beaker:
5 Na⁺ ions
5 OH⁻ ions
Number of ions in the third beaker:
4 Cl⁻ ions
5 Na⁺ ions
1 OH⁻ ion
The rest of H⁺ and OH⁻ ion reacted to form water.
Learn more about:
ions
brainly.com/question/269828
brainly.com/question/5042117
#learnwithBrainly
Spring tides occur during the full moon and the new moon
Answer:
1.070MKCl
Explanation:
So we know that the original formula is M= n/L (n being moles of solute, L being liters of solvent)
Since we do not have liters in this problem, we would need to convert milliliters to liters
<u>213 mL= 0.213 L</u>
We then see that we do not have moles, but we do have a mass, being <u>17.0 g.</u> we would need to convert these grams to moles, giving us <u>0.228 mol.</u>
Then, you would plug in <u>0.228 for your n</u>, and now you are ready to solve your original formula, plugging everything in.
M=n/L
M=0.228 mol/0.213L
M= 1.070MKCl
I know this was long, but I hope this helps (:
Answer:
79.14%
Explanation:
Given the equation : 2Fe2O3 + 3C 4Fe + 3C02
The theoretical yield of CO2 ; is 102.6g
Actual yield = 81.2 gram
Percentage yield = (actual yield / theoretical yield) * 100%
Percentage yield = (81.2 / 102.6) * 100%
Percentage yield = 0.7914230 * 100%
Percentage yield = 79.14%
Hence, tbe percentage yield of CO2 is 79.14%
