Answer:
The perfect pee is by adopting a posture where you sit on the toilet, with you feet flat on the ground, elbows on your knees and you lean forward. This is especially important in children because one in nine children develop bowel and bladder dysfunction purely due to inappropriate posture on the toilet.
Explanation:
I would say d. average of the mass number and the atomic number for the element.
I think the chemical reaction is:<span>
N2H4 + 2 H2O2-> N2 + 4H2O
We are given the amount reactants allowed to react. This will be the starting point of the reaction. First, is to find the limiting reactant.
9.24 g H2O2 ( 1 mol / 34.02 g ) = 0.27 mol H2O2
6.56 g N2H4 ( 1mol / 32.06) = 0.20 mol N2H4
Since from the reaction we have 1:2 ratio of the reactants then the limiting reactant is hydrogen peroxide. We will use this to find the amount of N2 produced.
0.27 mol H2O2 ( 1 mol N2 / 2 mol H2O2 ) ( 14.01 g N2 / 1 mol N2) =1.89 g N2
</span>
F is a group 17 element which are referred to as halogens. hence requires one electrons to obtain octet electron configuration.Therefore F has -1 charge. Xe is a group 18 element which are referred to as noble gas which has octet electron configuration but due to the two F- Xe has +2 formal charges.
Answer:
Calculated density = 0.8555g/ mL
Probable identity = Toulene
Explanation:
First off, the substance choices are;
isopropyl alcohol (density 0. 785 g/ mL)
toluene ( density 0.866g/ mL)
So upon calculation, if the density of the liquid substance is equal to either of the substances in the choice, it is that substance.
The relationship between density, mass and volume is given as;
Density = Mass / Volume
Mass = 38.5g
Volume = 45ml
Density = 38.5 / 45 = 0.8555g/ mL
Calculated density = 0.8555g/ mL
Among both substances, it is closest to toluene ( density 0.866g/ mL).
Probable identity = Toulene
