I believe there are 3 significant figures B.
The two systems would be respiratory and circulatory i think not completely sure tho <span />
Given:
pH is 5.27
Concentration of sol'n 0.013m (weak monoprotic)
Determine H+ concentration:
[H+] = 10^-pH
= 10^-5.27
= 5.37x10^-6
Ka = [H+] [A-] / [HA]
= (5.37x10^-6) * (5.37x10^-6) / (0.013 - 5.37x10^-6)
= 2.22x10^-9
The temperature of the water is 65 Celsius.
<u>Explanation</u>:
The temperature is measured in Celsius and Fahrenheit. Moreover, the kelvin is the SI unit of temperature, and 1 Kelvin is equal to -272.15 Celsius.
So, 272.15 Kelvin would be equal to 0 Celsius. Hence, 325 Kelvin would be around 51.85 degrees of Celsius. To give the iron bar energy, the water should be warmer than 52-degree Celsius. So, the iron bar would gain energy from water when the temperature of the water would be 65-degree Celsius.
Answer:
d
Explanation:
so in this question we need to find how many moles of H2O could be formed from 3.5 moles of oxygen.
And we know that 6 moles of H2O would be formed from 8 moles of O2 from this reaction.
By using stoichiometry we can find how many moles of H2O could be formed from 3.5 moles of oxygen since the ratio between O2 and H2O will not change even if we change the initial value of the reactants
3.50 moles of O2 * ((6 moles H2O)/(8 moles of O2))
which is d
