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2 years ago

How many post does it take to support a fence 200 ft long if a post is every 20 feet?

Chemistry

1 answer:

Art [367]2 years ago

3 0

10 because you divide 200 by 20

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Solve for ‘x’: 12(x-7)+3(2x+2)=50x-2

Alex Ar [27]

Answer:

Explanation:

Hi there!

12(x-7) = 12x -84

3(2x+2) = 6x+6

Total 18x-78

18x-78 = 50x-2

-78= 32x-2

-76= 32x

19/8 =x

Hope you understand

Have a nice day,

Wolfiex.

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3 years ago

What is the name of the binary compound Mg3 (PO3)2? A. magnesium phosphate B. magnesium phosphide C. Tri magnesium diphosphite D

Orlov [11]

B) Magnesium Phosphide

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3 years ago

Can someone tell me how do I finish this problem?!

Natalija [7]

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2 years ago

2 grams of a substance was dissolved in 75.0 g of water resulting in a temperature decrease from 23.1 ⁰C to 18.7 ⁰C. The specifi

RUDIKE [14]

<h3>Answer:</h3>

1379.4 Joules

<h3>Explanation:</h3>

The quantity of heat is calculated multiplying the mass of a substance by heat capacity and the change in temperature.

Therefore;

Quantity of heat = Mass × specific heat capacity × Change in temperature

Q = mcΔT

In this case;

The substance dissolved in water gained heat while water lost heat energy.

Thus, Heat gained by the substance = heat lost by water

Heat associated with the water

Mass of water = 75 g

Change in temperature = 4.4°C

Specific heat capacity = 4.18 J/g·⁰C

Heat = mcΔT

= 75 g × 4.18 J/g·⁰C × 4.4 °C

=1379.4 Joules

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2 years ago

26 Milkweed contains a poison known as cardenolides. Monarch butterflies eat the milkweed plant and hold on to this toxic compou

Amanda [17]

Cardenolides, with the chemical formula CH₁₈C₂₀H₁₅CHCO₂ have (D) 23 carbon atoms, 34 hydrogen atoms, and 2 oxygen atoms.

Milkweed contains a poison known as cardenolides. The chemical formula for cardenolides CH₁₈C₂₀H₁₅CHCO₂.

The subscripts in the formula represent the atomicities, that is the number of atoms of each element in each part of the formula.

We can calculate the total number of atoms of each element by adding its atomicities.

<h3>Carbon atoms</h3>

$C = 1 + 20 + 1 + 1 = 23$

<h3>Hydrogen atoms</h3>

$H = 18 + 15 + 1 = 34$

<h3>Oxygen atoms</h3>

$O = 2$

Cardenolides, with the chemical formula CH₁₈C₂₀H₁₅CHCO₂ have (D) 23 carbon atoms, 34 hydrogen atoms, and 2 oxygen atoms

Learn more: brainly.com/question/13348838

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2 years ago