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What is the name of compound (NH4)2S?
The compound (NH4)2S is called ammonium sulfide. It is composed of ammonium ions (NH4+) and sulfide ions (S^2-).
If p equals 2s plus 5 what is s in terms of p?
If p = 2s + 5, then s = (p-5)/2 or 1/2 (p-5) --- p = 2s +5 p-5 = 2s (p-5)/2 = s
How can you use 5 2s to equal 26?
You can use three 2s to make 26 as follows (2x2)! + 2 = 26 So you can simply make 26 with five 2s as (2x2!) + 2 - 2 + 2 = 26
What elements completes the 2s sublevel?
The 2s sublevel can hold a maximum of 2 electrons.
How do you make 9 from four 2s?
22/2 - 2
How can you use five 2s to get 42?
Not sure about five, but you can make 42 with 6 2s with this method: 2[(22)! - (2/2) - 2] = 42
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 does 2s-4 equal?
2s-4 equals 2(s-2). You can find the answer by factoring two out of both numbers.
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 answer to 5s - 6 equals 2s?
5s - 6 = 2s, ie 5s - 2s = 6, ie 3s = 6, ie s = 2
Factor the poynomial twice first use a common factor with a positive coefficient and then use a common factor with a negative coefficient -2s4 4s3-10s?
2s(-s^3 + 2s^2 - 5) -2s(s^3 - 2s^2 + 5)
How can you make 4 with two 2s?
you do 2 + 2
