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gizmo_the_mogwai [7]
3 years ago
14

How many moles of hydrogen are produced from a reaction involving 156.4 g of zinc and excess hydrochloric acid?

Mathematics
1 answer:
Serga [27]3 years ago
4 0

Answer:

its e. i don’t care <333

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Adrianna can read 7 pages in 10 minutes. At this rate,how many pages can she read in 25 minutes
Westkost [7]

Use a proportion. 7/10 = x/25. Multiply 10 by 2.5 to get 25. Similarly, multiply 7 by 2.5 to get 17.5. 17 1/2 pages.

5 0
3 years ago
Read 2 more answers
What is the value of x in this equation?<br> x - 1/2 = 3 1/6
Ludmilka [50]

Answer:

x= 3 2/3

Step-by-step explanation:

6 0
3 years ago
Explain why rational exponents are not defined when the denominator of the exponent in lowest terms is even and the base is nega
Mice21 [21]
<span><u><em>The correct answer is: </em></u>
we cannot take an even root of a negative number in the real number system.

<u><em>Explanation</em></u><span><u><em>: </em></u>
A rational exponent is another way of writing a root. The denominator of the rational exponent will be the root, and the numerator will be the power of the number under the root. If the denominator is even, this means we are taking an even root, such as square root, 4th root, etc.
If the base is negative, this means we want an even root of a negative number.
Any even root can be broken down into a series of square roots, done one after another.
However, we cannot take the square root of a negative number using real numbers; this is because a square root is a number multiplied by itself to get the answer; a negative times a negative is a positive, as is a positive times a positive, so there is no way to multiply the same number twice and get a negative.</span></span>
5 0
2 years ago
Read 2 more answers
If the slope of a line is 2/3 and a point on that line is (1 , 6), what is another point on the line
Arisa [49]

Answer:

(2, 20/3)

Step-by-step explanation:

6 0
3 years ago
What is the area of the shaded region?
Verdich [7]
<h2>Area of Composite Shapes</h2>

To find the area of composite shapes, we can break the bigger shape down into small, simpler shapes, and find the sum of their areas.

For this triangle, we will need to know the formula to find the area of a triangle:

A=\dfrac{1}{2}bh

<h2>Solving the Question</h2>

The given shape can be seen as one large triangle with a little triangle cut out of it. To find the shaded region, we can:

  1. Find the area of the large triangle
  2. Find the area of the little triangle
  3. Subtract the area of the little triangle from the large triangle

<h3>Area of the Large Triangle</h3>

A=\dfrac{1}{2}bh

⇒ Plug in the values given for the base and height:

A=\dfrac{1}{2}(5)(2+4+6)\\\\A=\dfrac{1}{2}(5)(12)\\\\A=(5)(6)\\\\A=30 mm^2

<h3>Area of the Small Triangle</h3>

A=\dfrac{1}{2}bh

⇒ Plug in the values given for the base and height:

A=\dfrac{1}{2}(3)(4)\\\\A=(3)(2)\\\\A=6mm^2

<h3>Subtract the Area of the Small Triangle from the Area of the Large Triangle</h3>

30 mm^2-6mm^2\\=24mm^2

<h2>Answer</h2>

The area of the shaded region is 24mm^2.

5 0
2 years ago
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