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3 years ago

C. Use the activity series of metals to predict the products of the following single-replacement

Mathematics

1 answer:

vesna_86 [32]3 years ago

5 0

Answer: NiCl2 + Fe

Iron is above nickel in the activity series, so iron will replace nickel like this:

NiCl2 + Fe → FeCl2 + Ni

Cu(OH)2 is insoluble, so it will form a precipitate.

Step-by-step explanation:

hope this helps =)

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2. D 3/4 (POR). Which of the following are the coordinates of R'?

hammer [34]

A(4/3, -4 that is the correct response

5 0

3 years ago

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At the beginning of my bike ride I feel good, so I can travel 20 miles per hour. Later, I get tired and travel only 12 miles per

Vesnalui [34]

Answer: $3\dfrac{1}{4}$ hours

Step-by-step explanation:

Let x be the time ( in hours ) you feel good and y be the time ( in hours ) that you get tired.

As per given , we have

x+y= 8

Since : $Distance = Speed\times Time$

So , we have

20x+12y=122

According to the given question , we have the following system of equations ,

$x+y= 8--------(1)\\\\20x+12y=122------------------(2)$

Multiply 12 on both sides of equation (1) , we get

$12x+12y=96------------(3)$

Eliminate equation (3) from (2) , we get

$8x=26\\\\\Rightarrow\ x=\dfrac{13}{4}=3\dfrac{1}{4}$

Hence, you felt $3\dfrac{1}{4}$ hours good.

3 0

3 years ago

Fencing cost $10 per foot. Frances had a rectangular garden that is 4 feet wide and 5 feet long . How much money will frances ne

Marizza181 [45]

Answer: $180

4ft + 5ft + 4ft + 5ft = 18ft
18 x 10 = 180

6 0

3 years ago

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The next morning, Charlie got up and went to gather eggs from the chickens. He gathered three eggs from three chickens and 2 egg

ElenaW [278]

Answer: 21 eggs

Step-by-step explanation:

Charlie gathered 3 eggs from each of the three chickens so the total he gathered from chickns is:

= 3 * 3

= 9 eggs

From the 6 turkeys he got:

= 2 * 6

= 12 eggs

Eggs in total:

= 9 + 12

= 21 eggs

6 0

3 years ago

Please help i think the answer is c but im not sure

katrin2010 [14]

Answer:

It's C

Step-by-step explanation:

Because the angle measurements are the same on rectangles and they have the same side lengths but the one on the right is a smaller rectangle which its only half the side of the bigger one.

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2 years ago