Answer:
The answer is D. Substances Y and Z would react to replace substance W, and the position of equilibrium would shift to the left.
Explanation:
PLZ BRAINLIEST'!!!
Answer:
Glass and lens making have improved, and electronic features for microscopes have become available
Explanation:
Answer:
5.450 mol Si₃N₄
Explanation:
Step 1: Write the balanced equation
3 Si + 2 N₂ ⇒ Si₃N₄
Step 2: Establish the theoretical molar ratio between the reactants
The theoretical molar ratio of Si to N₂ is 3:2 = 1.5:1.
Step 3: Establish the experimental molar ratio between the reactants
The experimental molar ratio of Si to N₂ is 16.35:11.26 = 1.45:1. Comparing both molar ratios, we can see that Si is the limiting reactant.
Step 4: Calculate the moles of Si₃N₄ produced from 16.35 moles of Si
The molar ratio of Si to Si₃N₄ is 3:1.
16.35 mol Si × 1 mol Si₃N₄/3 mol Si = 5.450 mol Si₃N₄
Answer:
Answer choice C
Explanation:
Neglecting either your own or your child's needs is always a bad idea and is bad for the child, meaning that A is not the correct answer. You should also not expect more of and push your child above their natural ability level, so B is also not correct. However, you should try to discipline and teach your child without hurting them physically or mentally. Therefore, C is the correct answer. Hope this helps!
Answer:
2.86 kJ
Explanation:
When a substance is heated and there's no phase change happening, the amount of heat (Q) necessary for the heating can be calculated by:
Q = m*c*ΔT
Where m is the mass, c is the specific heat capacity of the substance, and ΔT is the variation of temperature. So, in this case, m = 53.8 g, c = 1.05 J/g°C, and ΔT = 50.6 K. The temperature variation is the same in °C and K, so:
Q = 53.8*1.05*50.6
Q = 2858.394 J (÷1000)
Q = 2.86 kJ
