Answer:
Explanation:
Volume of cylinder = πr²h where r is radius of cylinder, h is height of cylinder
r = d/2 = 21/2 = 10.5 cm; h = 25.2 cm
volume of cylinder = (22 * 10.5 cm * 10.5 cm * 25.2 cm) / 7
volume = 8731.8 cm³ = 8.7318 L
Using the ideal gas equation, PV = nRT
P = 4.00 MPa = 4.0 * 10³ kPa, V = 8.7318 L, R = 8.314 L.kPa/mol.K,
n = mass / molar mass
where mass = 0.474 kg or 474 g, molar mass of BF₃= 68 g/mol
n = 474 g / 68 g/mol = 6.9706 moles
making T subject of formula in the ideal gas equation;
T = PV/nR
T = (4.0 * 10³ kPa * 8.7318 L)/(6.9706 mol * 8.314 L.kPa/mol.K)
T = 602.675 K
T in °C = K - 273.15
T = 602.675 -273.15 = 329.5 °C
T = 330 °C
Answer:
A metallic bonding holds the particles of the substance together
Explanation:
<em><u>The unknown substance is a metal</u></em>:
- It is easily bent: This means it is ductile, as it is the case with a thin metallic metallic wire.
- "When the substance is placed in a n electric circuit and the switch is closed, and LED light turns on." <em>This means it easily conducts electricity</em>. Metals are good conductors.
Uhhhhhhhhhhhhhh wut, can you rewrite it?
Hfs got no choice chbx going customers
Usually you it will hint you very indirectly suck as *a cell is placed in water(this is hypertonic there is more water outside the cell)*
And hypotonic is the opposite