Answer:
non-medals
Explanation:
I just took a quiz on this
Answer:
Silver
Explanation:
Given parameters:
Mass = 116g
Energy = 511J
Initial temperature = 21.6°C
Final temperature = 40.5°C
Unknown:
Specific heat capacity and the type of metal = ?
Solution:
To solve this problem, we need to find the specific heat capacity of the metal given,
H = m x c x Ф
H is the energy
m is the mass
c is the specific heat capacity
Ф is the change in temperature
511 = 116 x c x (40.5 - 21.6)
511 = 2192.4c
c = 0.233J/g°C
The specific heat capacity of silver is similar to this.
Answer:
2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
190.14 mL of the NaOH solution would be required.
Explanation:
The balanced reaction is:
- 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
Now we <u>calculate how many H₂SO₄ moles are there in 25.00 mL of a 5.400 M solution</u>, using the <em>definition of molarity</em>:
- Molarity = moles / liters
- Moles = Molarity * liters
- 25.00 mL * 5.400 M = 135 mmol H₂SO₄
Now we <u>convert H₂SO₄ moles into NaOH moles</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:
- 135 mmol H₂SO₄ * = 270 mmol NaOH
Finally we <u>calculate the volume of a 1.420 M solution that would contain 270 mmoles</u>:
- Molarity = moles / liters
- liters = moles / molarity
- 270 mmol / 1.420 M = 190.14 mL
Answer: The volume of given gas is 2.27 L.
Explanation:
Given: Mass = 3.54 g
Temperature = = (25 + 273) K = 298 K
Pressure = 725 mm Hg (1 mm Hg = 0.00131579) = 0.95 atm
As moles is the mass of substance divided by its molar mass.
So, moles of argon (molar mass = 40 g/mol) is as follows.
Formula used to calculate the volume of given gas is as follows.
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula as follows.
Thus, we can conclude that the volume of given gas is 2.27 L.
Answer:
I think C ,correct me if I'm wrong