Answer:
B
Explanation:
Acid rain
damaging a marble statue or anything else
is a physical change. <3
The average kinetic energy of a collection of gas particles depends on the temperature of the gas and nothing else.
Answer:
hope this helps
Explanation:
glycosidic bond
A covalent bond formed between a carbohydrate molecule and another molecule (in this case, between two monosaccharides) is known as a glycosidic bond (Figure 4). Glycosidic bonds (also called glycosidic linkages) can be of the alpha or the beta type.
Answer:
Oxide of M is
and sulfate of ![M_2(SO_4)_3](https://tex.z-dn.net/?f=M_2%28SO_4%29_3)
Explanation:
0.303 L of molecular hydrogen gas measured at 17°C and 741 mmHg.
Let moles of hydrogen gas be n.
Temperature of the gas ,T= 17°C =290 K
Pressure of the gas ,P= 741 mmHg= 0.9633 atm
Volume occupied by gas , V = 0.303 L
Using an ideal gas equation:
![PV=nRT](https://tex.z-dn.net/?f=PV%3DnRT)
![n=\frac{PV}{RT}=\frac{0.9633 atm\times 0.303 L}{0.0821 atm L/mol K\times 290 K}=0.01225 mol](https://tex.z-dn.net/?f=n%3D%5Cfrac%7BPV%7D%7BRT%7D%3D%5Cfrac%7B0.9633%20atm%5Ctimes%200.303%20L%7D%7B0.0821%20atm%20L%2Fmol%20K%5Ctimes%20290%20K%7D%3D0.01225%20mol)
Moles of hydrogen gas produced = 0.01225 mol
![2M+2xHCl\rightarrow 2MCl_x+xH_2](https://tex.z-dn.net/?f=2M%2B2xHCl%5Crightarrow%202MCl_x%2BxH_2)
Moles of metal =![\frac{0.225 g}{27.0 g/mol}=8.3333 mol](https://tex.z-dn.net/?f=%5Cfrac%7B0.225%20g%7D%7B27.0%20g%2Fmol%7D%3D8.3333%20mol)
So, 8.3333 mol of metal M gives 0.01225 mol of hydrogen gas.
![\frac{8.3333}{0.01225 mol}=\frac{2}{x}](https://tex.z-dn.net/?f=%5Cfrac%7B8.3333%7D%7B0.01225%20mol%7D%3D%5Cfrac%7B2%7D%7Bx%7D)
x = 2.9 ≈ 3
![2M+6HCl\rightarrow 2MCl_3+3H_2](https://tex.z-dn.net/?f=2M%2B6HCl%5Crightarrow%202MCl_3%2B3H_2)
![MCl_3\rightarrow M^{3+}+Cl^-](https://tex.z-dn.net/?f=MCl_3%5Crightarrow%20M%5E%7B3%2B%7D%2BCl%5E-)
Formulas for the oxide and sulfate of M will be:
Oxide of M is
and sulfate of
.