Explanation:
(a) Formula for critical stress is as follows.
Here, = 54.8
= 0.99
a = 0.8 mm = m
Putting the given values into the above formula as follows.
=
= 1107 MPa
Hence, value of critical stress is 1107 MPa.
(b) Applied stress value is given as 1205 MPa and since it is more than the critical stress (1107 MPa) as a result, a fracture will occur.
(a) 33.6 L of oxygen would be produced.
(b) 106 grams of would be needed
<h3>Stoichiometric calculations</h3>
1 mole of gas = 22.4 L
(a) From the equation, 2 moles of produce 3 moles of . 1 mole of will, therefore, produce 1.5 moles of .
1.5 moles of oxygen = 22.4 x 1.5 = 33.6 L
(b) 22.4 L of is produced at STP. This means that 1 mole of the gas is produced.
From the equation, 1 mole of requires 1 mole of .
Molar mass of = (23x2)+ (12)+(16x3) = 106 g/mol
Mass of 1 mole = 1 x 106 = 106 grams
More on stoichiometric calculations can be found here: brainly.com/question/27287858
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The answer is B2. The configuration has six electrons. B2 is
the only answer choice that has six valence electrons. Boron is a chemical
element with symbol B and atomic number 5. Shaped completely
by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it
is a low-abundance element.
Answer: Velocity
Explanation:
i just took the quiz for k12
The second choice: physical change <span>because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved</span>