Was Practice
1. How much thermal energy is required to raise the temperature of 6.0 mL of water
from 25 °C to 75 °C in a calorimeter or other closed system? spy fans: 1.3 kJ
2. Aqueous ethylene glycol is commonly used in car radiators as an antifreeze and
coolant. A 50 % ethylene glycol solution in a radiator has a specific heat capacity,
C, of 3.5 J/g-C), a 4.0 kg quantity of ethylene glycol absorbs 250 kJ of thermal
energy, what was the temperature change, AT, of the solution? Assume the radiator
is a dosed system. sz fans: 18 °C]

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.