Answer:
The Solar System moves through the galaxy with about a 60° angle between the galactic plane and the planetary orbital plane. The Sun appears to move up-and-down and in-and-out with respect to the rest of the galaxy as it revolves around the Milky Way
Explanation:
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Answer:
The products are already in the question Hydrogen gas and Magnesium Chloride
Explanation:
2Mg +2HCl₂ = 2MgCl₂ + H₂ balanced equation if you need it
Answer: 565.245kJ
To answer this question, you need to know how much water heat capacity which was 4.187 kJ/kg K. First, we need to find the calorie absorbed by water. Since the sample is 1kg, the initial temperature is 21 ∘C and final temperature is 34.5 <span>∘C then the calculation would be:
Energy= (Final temp - initial temp) * heat capacity * mass
Energy = (34.5-21) </span>∘C * 4.187 * kJ/kg K * 1kg= 56.5245 kJ
The energy is made from 0.1 gram, then for 1 gram of energy it should be:
1 gram/ 0.1gram x 56.5245 kJ= 565.245kJ
Answer:
Moles added = 0.0722 moles
Mass added = 2.3104 g
Explanation:
Given:
Pressure = 640.0 torr
The conversion of P(torr) to P(atm) is shown below:
So,
Pressure = 640 / 760 atm = 0.8421 atm
Temperature = 25.0 °C
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T₁ = (25.0 + 273.15) K = 298.15 K
Volume = 42.9 L
Using ideal gas equation as:
PV=nRT
where,
P is the pressure
V is the volume
n is the number of moles
T is the temperature
R is Gas constant having value = 0.0821 L.atm/K.mol
Applying the equation as:
0.8421 atm × 42.9 L = n × 0.0821 L.atm/K.mol × 298.15 K
⇒n = 1.4759 moles
Some new moles have been added and the volume has increased to 45.0 L
Using Avogadro's law
Given ,
V₁ = 42.9 L
V₂ = 45.0 L
n₁ = 1.4759 moles
n₂ = ?
Using above equation as:
n₂ = 1.5481 moles
Moles added = n₂ - n₁ = 1.5481 moles - 1.4759 moles = 0.0722 moles
Molar mass of oxygen gas = 32 g/mol
So, Mass = Moles*Molar mass = 0.0722 * 32 g = 2.3104 g
<u>Moles added = 0.0722 moles</u>
<u>Mass added = 2.3104 g</u>