Answer:
Option A) Na
Explanation:
From the options given above, sodium (Na) is most likely to lose electron to form ion
Na is a group 1 metal. Metals form ions by losing electron(s).
From the options given above, only Na is a metal and so it is most likely to form ion by losing electron
The study of atomic structure helps us understand more about the way the universe is constructed, how our bodies are made, and the components of life, which we can apply to other sciences in the fields of: health and disease prevention, fuels, product industry etc... It basically helps us to understand how we can make new things and how to utilize the power of the universe.
Answer:
ΔH = - 11758.6 J/mol = - 11.76 kJ/mol
Explanation:
Step 1: Data given
Mass of arsenic tribromide = 54.7 grams
MAss of water = 300.0 grams
Temperature of water = 22.50 °C
Final temperature of water = 24.13 °C
Step 2: Calculate ΔH
Q= m*c*ΔT
⇒with m =the mass of water = 300.0 grams
⇒with c= the specific heat of water = 4.184 J/g°C
⇒with ΔT = the change in temperature of water = T2 - T2 = 24.13 - 22.50 = 1.63 °C
Q = 300 * 4.184 * 1.63
Q = 2046 J
Step 3: Calculate moles AsBr3
Moles AsBr3 = mass / molar mass
Moles AsBr3 = 54.7 grams / 314.634 g/mol
Moles AsBr3 = 0.174 moles
Step 4: Calculate ΔH
ΔH = -Q/moles
ΔH = -2046 J / 0.174 moles
ΔH = - 11758.6 J/mol = - 11.76 kJ/mol
Answer:
Molar mass in grams mole is 111.0740g/mol
The answer is A, it increases.
As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container. The force exerted by the particles per unit of area on the container is the pressure, so as the temperature increases the pressure must also increase.
