Answer:
Answer A
Explanation:
because it had 6 electrons in the last shell so it needs two electrons to reach 8
Answer:
The specific heat capacity of a metal is 1.31 J/g°C = C
Explanation:
A classical excersise of calorimetry to apply this formula:
Q = m . C . ΔT
177.5 J = 15 g . C (34°C - 25°C)
177.5 J = 15g . 9°C . C
177.5 J /15g . 9°C = C
1.31 J/g°C = C
Answer:
Global Warming!
Explanation:
Greenhouse gases help keeping the Earth warm for example; Carbon dioxide, methane etc. But recently there has been too much pollution which produced more greenhouse gases like; carbon dioxide...Usually trees and plants would help in keeping the air clean by eliminating carbon dioxide but as we know trees are being cut down. Which increases the amount of CO2 (chemical formula of Carbon dioxide) and they capture more heat. Which causes the temperature to gradually increase in earth and ice caps to melt in Antarctica, and causes the water levels to rise.
Answer is: the temperature is 28.9°C.
n = 2.48; amount of the gas.
V = 30.0 L; volume of the gas.
p = 1559 mmHg ÷ 760 mmHg/atm.
p = 2.05 atm; pressure of the gas.
R = 0.0821 L·atm/mol·K.
Ideal gas law: p·V = n·R·T.
T = p·V ÷ (n·R).
T = 302.05 K - 273.15.
T = 28.9°C; temperature of the gas.
Answer:
Iron, nickel and cobalt are the most common magnetic elements.
