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bearhunter [10]
3 years ago
13

Please help!

Chemistry
2 answers:
skelet666 [1.2K]3 years ago
3 0

Answer:

Heat

Explanation:

Wewaii [24]3 years ago
3 0

Answer:

Heat

Explanation:

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An increase in blood co2 levels leads to __________.
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Respiratory Acidosis

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Which of the following contains properties of magnesium, Mg?
tekilochka [14]

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Option B. Malleable, Conductor, High melting point, Lustrous

Explanation:

Mg has a higher melting point because of the strong electrostatic force of attraction between the magnesium ions (Mg^2+). The rest properties listed are all general properties of metals

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Calcium atoms have two electrons in the outermost shell. As a result, you would expect calcium to form ions with a charge of
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Calcium will form ions with a charge of +2
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In an ecosystem, there are many factors that affect how many organisms can survive them. Which of the following is one of those
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The cost of painting the circular traffic sign shown below is $3.50 per square foot. How much, to the nearest dollar, will it co
KiRa [710]

The cost of painting the traffic sign of 7.065 square feet is approximately equal to 25 dollar.

<u>Explanation:</u>

The cost of painting the circular traffic sign is given as 3.50 dollar per square feet. The diameter of the traffic sign is 36 inch, then its radius will be \frac{36}{2} = 18 inches.

But as the cost is given in unit of feet, we have to convert the radius from inches to feet.

1 inches = 0.0833 feet

18 inches = 18 × 0.0833 feet

So, the radius of the traffic sign will be approximately equal to 1.5 feet.

The area of the traffic sign will be \pi r^{2} = 3.14 \times 1.5 \times 1.5 = 7.065 square feet.

So, if the cost of painting 1 square feet of traffic sign is 3.50 dollar, then

cost of painting 7.065 square feet of traffic sign =  3.50 × 7.065 = 24.7 dollar.

Thus, the cost of painting the traffic sign of 7.065 square feet is approximately equal to 25 dollar.

8 0
3 years ago
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