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1. ### For which of the following types of ionic compounds are most examples insoluble in water? nitrates sulfates chlorides hydroxides?

... Group I elements (Li+, Na+, K+, Cs+, Rb+) are soluble . There are few exceptions...

1 Answers · Science & Mathematics · 05/06/2019

2. ### Write the equation of an ellipse centered at the origin with foci at (0, -3) and (0, 3) and a major axis of 10.?

...k±a)  length of major axis = 2a  co-vertices (h±b,k)  foci (h,k±c), c² = a²-b² Apply your given information...

4 Answers · Science & Mathematics · 29/05/2019

3. ### does silver nitrate + sodium suphate = ? a precipitate?

... Group I elements (Li+, Na+, K+, Cs+, Rb+) are soluble . There are few exceptions...

1 Answers · Science & Mathematics · 26/05/2019

4. ### What are the vertices, covertices, and foci of the ellipse (x-5)^2/64 + (y-10)^2/100 = 1?

...k)  vertices (h,k±a)  co-vertices (h±b,k)  foci (h,k±c), c² = a²-b²   (y-10)²/10² + (x-5)²...

4 Answers · Science & Mathematics · 21/05/2019

5. ### Find k For Quadratic Equation?

x^2 - kx + 4 = 0 apply the discriminant formula a = 1 , b = - k, c = 4 b^2 - 4ac = 0 (-k)^2 - 4(1)(4) = 0 k^2 - 16 = 0 k^2 = 16 k = √(16) k = 4 answer// x^2 - 4x + 4 = 0 (x - 2)(x - 2) = 0 x = 2

8 Answers · Science & Mathematics · 19/05/2019

6. ### Label the foci, the major vertices, and the minor vertices. (−1)^2/49 +(+3)^2/169 =1?

... an ellipse with major axis parallel to the y-axis, the foci are (h, k - c) and (h, k + c) where c = √(b² - a²) In this case, c = √(...

1 Answers · Education & Reference · 13/05/2019

7. ### Hyperbolas?

Rules (−k)^2/a^2 - (x-h)^2/b^2 = 1 , c = √(a^2+b^2) vertices (h , k+a) and (h , k-a) Foci (h , k + c) and (h , k - c) the asymptotes y - k = ±(a/b)(x-h)

1 Answers · Science & Mathematics · 13/05/2019

8. ### Ideal Gas Law Chemistry?

1. T = PV / nR = ( 2.5 atm) x (8 L) / ((3 mol) x (0.082057338 L atm/K mol)) = 81.24 K So answer c, although no more than one significant digit is justified. 2. Balloons typically do not have a constant volume, but ignoring that fact...

1 Answers · Science & Mathematics · 03/05/2019

9. ### Calculate the given quantity if a = i + j − 2k b = 4i − 2j + k c = j − 4k.?

14i - 4j - k

2 Answers · Science & Mathematics · 02/05/2019

10. ### Which of the following pairs exhibit an ion-dipole interaction?

Ion-dipole .... While technically, not an intermolecular attraction, it gets included with these. Obviously, you need an ion and a dipole. A) CH3CH2CH2CH2CH3 and CH3CH2CH2CH2COOH -- no ion B) Cl– and K+ -- no dipole...

3 Answers · Science & Mathematics · 04/05/2019