Hey there !
a) Pb(SO4)2 => <span> lead(II) sulfate
b) </span><span>The molar mass of this compound was calculated from the amount of atoms of each element, with its respective atomic masses
Pb = 207.2 a.m.u
S = 32.065 a.m.u
O = </span><span>15.9994 a.m.u
Therefore:
</span>Pb(SO4)2 = 207.2 + 32.065 * 2 + 15.9994 * 8 => <span>399.3252 g/mol
</span>
hope this helps!
Sp3. I just took a quiz exact same question and the answer was that I don't know how to get it sorry.
The given question is incomplete. The complete question is as follows.
A 0.6-m3 rigid tank is filled with saturated liquid water at 135°C. A valve at the bottom of the tank is now opened, and one-half of the total mass is withdrawn from the tank in liquid form. Heat is transferred to water from a source of 210°C so that the temperature in the tank remains constant. Assume the surroundings to be at 25°C and 100 kPa. Determine the amount of heat transfer.
Explanation:
First, we will determine the initial mass from given volume and specific volume as follows.
=
= 558.14 kg
Hence, the final mass and mass that has left the tank are as follows.
=
= 279.07 kg
Now, the final specific volume is as follows.
=
= 0.00215
Final quality of the mixture is determined actually from the total final specific volume and the specific volumes of the constituents for the given temperature are as follows.
=
=
Hence, the final internal energy will be calculated as follows.
=
= 571.06 kJ/kg
Now, we will calculate the heat transfer as follows.
Q =
= 1113.5 kJ
Thus, we can conclude that amount of heat transfer is 1113.5 kJ.
Answer:
No, it does not follow
Explanation:
The law of consevation of matter states that matter can neither be created nor destroyed. Hence, in a closed system involving a physical or chemical reaction, the amount of matter (mass) present in the reactants must equate the amount of matter in the products.
i.e. mass of reactants = mass of products
In the chemical reaction in the image, sodium reacts with hydrogen chloride (reactants) to give sodium chloride and hydrogen gas (products). That is,
Na(s) + HCl(aq) ------> NaCl(aq) + H2(g)
According to the image, the mass of Na= 14.25g, HCl= 9.50g, {NaCl + H2} = 22.98g
The mass of the reactants is 14.25+9.50= 23.75g
Mass of products= 22.98g
The mass of reactants and products are not equal and hence, does not follow the law of conservation of matter.
Answer:
1 Answer. 1 mole of ferric sulfate contains 2 moles of iron, and 12 moles of oxygen atoms, and three moles of sulfate ions.Sep 29, 2016
Explanation: