Answer:
The answer is 13.
Explanation:
In an element, proton number is also define as atomic number. So if the element has 13 protons, it's atomic number will be 13.
Answer:
Eukarya
Explanation:
Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.
An organ system is contained inside an organism. Going from largest to smallest it goes organism->organ system-> organ-> tissue-> cell-> atom
1.) Convert grams of glucose to moles of glucose:25.5g gluc. * (1 mol/180g gluc.) = 1.41E-1 mol gluc. Note. Molar mass gluc. = 180g/mol
2.) Convert grams of solvent to kilograms of solvent:398 g H2O * (1kg H2O/1000g H2O) = 0.398 kg H2O
3.) Determine molality (moles solute/kilogram solvent) of solux:1.41E-1 mol gluc./0.398 kg H2O = 3.5427E-1 mol/kg
4.) Employ Freezing Point Depression equation and determine the freezing point of the solux:
ΔT = i Kf mΔT= ? (°C)Kf = 1.86 (°C kg mol¯1)m = 3.5427E-1 (mol/kg)i = (assumed negligible)
ΔΤ = (1.86)(3.5427E-1)ΔT = 6.589Ε-1°C
5.) ΔT = 6.589Ε-1°C
25.5g gluc. * (1 mol/180g gluc.) = equal 0.14166, not 1.41E-1 mol glucose
-16+-7 is like -16-7 which is -23
