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The reaction produces heat
Brendan Walsh
Wiki User
∙ 7y agothe reaction produces heat.
Ca(OH)2(s) -> Ca2+(aq) + 2OH-(aq) h= -16.71
The reaction is endothermic.
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Which reaction shows that the enthalpy of formation of cs2 is hf 89.4 kJ mol?
C(s) + 2S(s) + 89.4 kJ --> CS2(l)
What is the name of compound (NH4)2S?
The compound (NH4)2S is ammonium sulfide.
The major difference between a 1s orbital and a 2s orbital is that?
the 2s orbital is at a higher energy level
The correct electron configuration for nitrogen is?
a. [He]2s(squared) 2p(cubed)1s^2 2s^2 2p^3
What is associated with more energy a 2s or a 3s orbital?
An electron in a 2s orbital is on average closer to the nucleus.
What is the reaction of mono ethanol amine with H2S?
amine sulfide 2HOCH2CH2NH2 + H2S = (HOCH2CH2NH3)2S and hydrosulfide (HOCH2CH2NH3)2S + H2S = 2HOCH2CH2NH3HS Ref : The Sulphur Problem : Cleaning Up Industrial Feedstocks
What is the word equation for the reaction of sodium plus sulfur?
Na + 2S --> Na2S Sodium and Sulphur yield Sodium Sulphide.
Which reaction shows that the enthalpy of formation of CS2 is H89.4 kj mol?
C(s) + 2S(s) + 89.4kJ --} CS2(l)
What is the balanced equation for the reaction of dihydrogen sulfide reacting with oxygen diatomic and sulfur and water are formed?
2h2s + o2 -> 2s + 2h2o
Which reaction shows that the enthalpy of formation of cs2 is hf 89.4 kJ mol?
C(s) + 2S(s) + 89.4 kJ --> CS2(l)
How do you factor 4s2-9?
4s2 - 9 can be expressed by using the identity: a2 - b2 = (a-b)(a+b) Therefore, 4s2 - 9 = (2s)2 - 32 = (2s-3)(2s+3)
What is the double replacement for zinc chloride plus ammonium sulfide?
The chemical reaction is:ZnCl2 + (NH4)2S = ZnS(s) + 2 NH3 + 2 HCl
What is equevitent to 7s plus 2s?
The equivalent of 7s plus 2s is 9s.
What is the answer to 2s-12 plus 2s equals 4s-12?
2s - 12 + 2s = 4s - 124s - 12 = 4s - 124s = 4ss = s==========this is an identity and any number can be s
What is the answer to 2s plus 16 equals 4s - 6?
2s + 16 = 4s - 6 Subtract 2s from both sides: 16 = 2s - 6 Add 6 to both sides: 22 = 2s divide both sides by 2: s = 11
How do you determine the equation for the perpendicular bisector of the straight line joining the points s 2s and 3s 8s?
A = (s, 2s), B = (3s, 8s) The midpoint of AB is C = [(s + 3s)/2, (2s + 8s)/2] = [4s/2, 10s/2] = (2s, 5s) Gradient of AB = (8s - 2s)/(3s - s) = 6s/2s = 3 Gradient of perpendicular to AB = -1/(slope AB) = -1/3 Now, line through C = (2s, 5s) with gradient -1/3 is y - 5s = -1/3*(x - 2s) = 1/3*(2s - x) or 3y - 15s = 2s - x or x + 3y = 17s
What is 9r squared-4s square over 9r plus 6s?
9r2-4s2/9r+6sIt looks like you can factors the numerator(3r + 2s)(3r - 2s) [This is the factored form of 9r2-4s2]Put this back into the equation(3r+2s)(3r-2s)/9r+6sYou can also factor the denominator3(3r+2s)Put this back into the equation(3r+2s)(3r-2s)/3(3r+2s)You can cancel out the 3r+2s on top and bottom because they are the same they equal 1. Therefore your final answer is3r-2s over 3You could go further and say this is...r-(2/3)seither one is correct
