Answer:
Explanation:
There are a series of unit used to measure PRESSURE. They include millimetre mercury (mmHg), atmospheric pressure (atm), kilopascal etc. These units of measurement are interconvertible i.e. can be changed from one unit to another.
Based on this question asking to convert
1 kilopascal = 0.00986923atm
Answer:
We need 4.06 J to heat of 406.0 mg of cyclohexane
Explanation:
Step 1: Data given
Mass of cyclohexane = 406.0 mg = 0.406 grams
The initial temperature = 33.5 °C
The final temperature = 38.9 °C
The specific heat of cyclohexane = 1.85 J/g*K
Step 2: Calculate the energy required to heat
Q = m*c*ΔT
⇒ with m = the mass of cyclohexane = 0.406 grams
⇒ with c = the specific heat of cyclohexane = 1.85J/g*K
⇒ with ΔT = The change of temperature = T2 - T1 = 38.9 - 33.5 = 5.4
Q = 0.406 g * 1.85J/g*K * 5.40
Q = 4.06 J
We need 4.06 J to heat of 406.0 mg of cyclohexane
Answer:
Independent variable- nature of irrigation water
Dependent variable- height of the plants
Explanation:
In every study, there must be an independent and a dependent variable. The dependent variable changes its value as the value of the independent variable changes.
When the nature of irrigation water is manipulated, the height of the plant changes accordingly. This implies that the nature of irrigation water (microwaved or tap water) is the independent variable while the height of the plant (the response) is the dependent variable.
It just means that the compound is dissolved into water
H20(aq) -----> 2H+ + 0 2
There are 4 moles of spectator ions that remain in solution.
The equation of the reaction is;
Na2CO3(aq) + Pb(NO3)2(aq) -------> PbCO3(s) + 2NaNO3(aq)
We have to determine the limiting reactant. This is the reactant that yields the least amount of product. Note that the spectator ions are Na^+ and NO3^- that form NaNO3.
For Na2CO3
1 mole of Na2CO3 yields 2 moles of NaNO3
3 moles of Na2CO3 yields 3 × 2/1 = 6 moles of NaNO3
For Pb(NO3)2
1 mole of Pb(NO3)2 yields 2 moles of NaNO3
2 moles of Pb(NO3)2 yields 2 × 2/1 = 4 moles of NaNO3
We can see that Pb(NO3)2 is the limiting reactant.
Since [NaNO3] = [Na^+] = [NO3^-], it follows that there are 4 moles of spectator ions that remain in solution.
Learn more: brainly.com/question/22885959