Jakob

This page lists questions and answers that were posted by visitors named Jakob.

Questions

The following questions were asked by visitors named Jakob.

what river forms the border between alabama and georgia

How many individual hydroxide ions (OH)- are found in 13.4mL of 0.586M Ba(OH)2? I'm not quite sure how to do this. Thank you!

Approximately 1.5 10-3 g of iron(II) hydroxide, Fe(OH)2(s) dissolves per liter of water at 18°C. Calculate Ksp for Fe(OH)2(s) at this temperature. This is what I've done: 1.5x10^-3 g Fe(OH)2/L x 1mol Fe(OH)2/89.863g Fe(OH)2 = 1.669x10^-5 M Fe(OH)2 Fe(OH)2...

Calculate the pH and pOH of a solution prepared by dissolving 0.93 g of HCl in enough water to give 0.40 L of solution.

What does the word distinct mean and can you use it in a sentence?

Find the equation of the vertical line that passes through the point (4,-9).

Find the equation of the horizontal line that passes through the point (3,5).

4.12 grams of Zinc are placed in a crucible with 3.00 grams (excess) of Sulfur. when reaction is complete the product mass is 6.10 grams. What mass of Sulfur should be used in the simplest formula calculation? Find the empirical formula of Zinc Sulfide. M...

A stubborn 110 kg pig sits down and refuses to move. To drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 N. The coefficients of friction between the pig and the ground are μs=0.80 and μk=0...

Let a=5/13 + 12i/13 and b=2-3i. The function h(z)=a*conj(z)+b$ represents a reflection in the complex plane. What is the line that h(z) reflects over?

Suppose we have a square with vertices at$0, -6+13i, -19+7i, and -13-6i. Suppose that we want to multiply these points by a single complex number a+bi to get a square with vertices 0, 8+2i, 6+10i, and -2+8i. What is (a,b)?

Suppose that f is a Mobius transformation such that f(1)=i, f(i)=-1, and f(-1)=1. Find the value of f(-i).

You are unable to lift an object. Which property makes the object difficult to lift?

Answers

The following answers were posted by visitors named Jakob.

I don't understand... I thought OH is only raised to the 2nd power? Not multiplied by 2 and then raised to the 2nd power? So the Ksp should be [Fe][2OH]^2?

Sorry, I understand now... thank you very much for your help!

I figured it out! Thanks!

They wouldn't service in their new environment

I'm not entirly sure but i think that might be the correct answer!

I also agree with Converse. B)

Hi, Cleopas. In order to multiply these two complex numbers, use FOIL (First Outside, Inside Last). This technique gives us AB = (3+4i)(2+5i) = 15i + 6 - 20 + 8i = 23i - 14.

The 60 two-hundred milliliter packets of milk amount to 60 * 200 = 12000 milliliters of milk, which is 12 liters. This is the amount of milk per carton. The total amount of milk, therefore, is 40 * 12 = 480 liters.

@Deven how might that be? I'm confused of the thought process necessary to get there.

These are examples of a dependent variable and an independent variable. Because y is the variable which is changing, it is considered the dependent variable (as its value DEPENDS on the independent variable). By process of elimination, x is the independen...

5(x^(-2)) = 5/(x^2). Your answer is C.

Even though you were being quite annoying ('please'; 'pleeease'), I'm willing to give you a full solution. Please note that I'd like you to learn from this solution, and grow as a mathematics student. Thanks for understanding. Let b be a variable which re...

Echoing 'Just a gamer', more context is needed to solve this problem.

Sure. I'm assuming '8 other' means eight other problems. Go ahead! I just want you to learn from my solutions along the way. Do we have a deal?

Shantel, I'm not trying to be impatient, but where are the 8 other problems?

[This first step isn't entirely necessary.] Using the distributive property, the equation/function y = 15(x-2)+45 simplifies to y=15x+15. Therefore, the rate of change you're looking for is... 15.

Although 'oobleck' has already outlined your path to victory, I'll just put the calculation here in case you haven't got it already. 10.4*5*8= 104*4 = 416 cubic millimeters.

Thanks for writing back! 1. 7(x^(-4))(y^2)=7*9=63. 2. (-x)^5 * (4x)^2 = -(x^5) * 16x^2 = -16x^7. 3. (2x^2)^3 simplifies to 8x^6. Please make sure you see why I can only simplify this. 4. (12x^6/3x^2)(y^(-4)/y^(-6))((z^2)/(z^3))=4(x^4)(y^2)(z^(-1)) 5. If t...

@oobleck. That would be incorrect. The nth term in the third sequence can be found with the expression 4 * 3^(n-1). The nth term in the fourth sequence can be found with the expression 256/(4^(n-1)), and is therefore logarithmic.

Okay, so I'm assuming that each employee receives their own gift box. Let's use C to represent coffee, T to represent tea and B to represent biscuits. Each gift box's contents can therefore be written as 6C + 4T + 2B. In the first year, the company is pro...