Answer:
1.b
2.b
3.a
4.a
Explanation:
use the rate laws when answering this.
The speed of sound is given by the formula
Speed of sound = square root (Young's Modulus/density)
Young's modulus for gold = 78 GPa which is 7.8 * 10^10 Pa
Speed of sound = (7.8 * 10^10 / 19.3 ) = sqrt (4.04 * 10^9 )
Speed of sound = 6.36 * 10^4 m/s <<<=== answer.
Answer:
The answer to your question is: B. Nickel Sulfate
Explanation:
A. Nickel sulfur oxide this compound do not exist, this option is incorrect.
B. Nickel sulfate This compund exist and the formula is NiSO₄
C. Nickel oxygen sulfide This compound do not exist, the order of the names is inocrrect.
D. None of these This option is incorrect because because letter B is correct.
Answer:
a. C₄H₁₀/O₂ = 2:13 (example)
b. O₂/CO₂ = 13:8
c. O₂/H₂O = 13:10
d. C₄H₁₀/CO₂ = 2:8
e. C₄H₁₀/H₂O = 2:10
Explanation:
2C₄H₁₀ + 13O₂ ⟶ 8CO₂ + 10H₂O
The molar ratios are the same as the coefficients in front of the formulas.
