Answer:
Explanation:
<u>1) Data:</u>
a) n = ?
b) V = 50.0 dm³ = 50.0 liter
c) p = 100.0 kPa
d) T = 50 °C
<u>2) Physical law:</u>
<u>3) Constants:</u>
- R = 0.08206 atm-liter / K-mol
<u>4) Unit conversions:</u>
- T = 50 + 273.15 K = 323.15 K
- P = 100.0 kPa × (1 amt /101,325 kPa) = 0.9869 atm
<u>5) Solution:</u>
- n = 0.9869 atm × 50.0 liter / (0.08206 atm-liter /K-mol × 323.15 K)
Answer:
Climate change is already impacting Baltimore residents, businesses and visitors. As atmospheric warming from greenhouse gases persists, Baltimore residents can expect to experience; Extreme temperatures. Excessive demand for cooling power, increasing demand on the electrical grid.Maryland's climate is changing. ... In the coming decades, changing the climate is likely to increase coastal and inland flooding; harm marine, wetland, and inland ecosystems; disrupt fishing and farming; and increase some risks to human health. Our climate is changing because the earth is warming.
Molality can be expressed by moles of solute over
kilograms of solvent. The question asks the molality of 0.25m NaCl. 0.25m NaCl
is equal to 0.25 moles of NaCl over 1 kg of water.
Answer:
The correct answer is A) an equal amount of heat will be absorbed by the surroundings.
Explanation:
According to law of conservation of energy or first law of thermodynamics energy can neither be created nor destroyed.Energy can only be converted from one form to another one.The amount of energy of the universe is fixed.
If the reaction have to follow the first law of thermodynamics then according to the question the right answer will be equal amount of heat will be absorbed by the surroundings to maintain the constant energy level of the universe.