Answer;
FeSO4 (aq) + H2 (g)
Explanation;
The reaction between iron and dilute sulfuric acid gives a salt and hydrogen gas. (iron (ii) sulfate and hydrogen gas).
The equation for the reaction is;
Fe(s) + H2SO4 (aq) = FeSO4(aq) +H2(g)
<u>Answer:</u>
<em>The final volume must be 400 mL.</em>
<em></em>
<u>Explanation:</u>
Let us assume the Initial volume as 100ml
Using dilution factor formula
So,
Thus, the final volume must be 400 mL.
<span>The effective method for separating a mixture of alcohol and water is the
Distillation
</span> By this you only get about 70% alcohol 30% water
As they are <span>azeotropes and cannot be distilled further
so correct option is B
hope it helps
</span><span>, </span>
Answer:
1080 photons
Explanation:
ΔE = hc/λ => Energy per photon
h = 6.63 x 10⁻³⁴ j·s
c = 3 x 10⁸ m/s
λ= 535 nm = 5.35 x 10⁻⁷ m
ΔE/photon = (6.63 x 10⁻³⁴ j·s)(c = 3 x 10⁸ m/s)/(5.35 x 10⁻⁷ m) = 3.71 x 10⁻¹⁹ j/photon
For #photons in 4.00 x 10⁻⁷ j = (4.00 x 10⁻⁷ j) / (3.71 x 10⁻¹⁹ j/photon) = 1076 photons ≅ 1080 photons (3 sig. figs.)
264.7miles per gallon
Explanation:
Given parameters:
Distance traveled = 264km
volume of gasoline = 23.3L
Unknown:
Gas mileage = ?
Solution:
We are to solve for the Gas mileage in miles per gallon. This will show how much gas was used per miles covered.
Convert km to miles
liters to gallon
1mile = 1.609km
1liter = 0.264gallon
In miles; = 164.1miles
23.3L = 23.3 x 0.264 = 0.62gallon
miles per gallon = = 264.7miles per gallon
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