3 years ago

What sea animals have moveable spines that they use for protection

Chemistry

1 answer:

Keith_Richards [23]3 years ago

7 0

Answer:

sea urchins

Explanation:

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fenix001 [56]

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The Earth, the Sun, and the rest of the solar system are almost unimaginably old when viewed on a human time scale. While modern

lord [1]

That makes the Earth, the Sun, and the rest of the solar system
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A canoe displaces 100 L of water. Water weighs 9.8 N/L. What is the buoyant force on the canoe?

Setler79 [48]

Hey there!

The Buoyant force is going to be equal to the weight of the water displaced and it would be like this 100 L(9.8 N/L) = 980 N.

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Why isn't a comet a planet?

Fantom [35]

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3 years ago

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A student was provided with a solid sample made up of a mixture of components. Prior to separation, the student measured 2.895 g

Shtirlitz [24]

Answer:

Component 1, since it has the greatest mass.

Explanation:

Hello,

In this case, considering that the by-mass percent of a substance is computed:

$\% m/m_i=\frac{m_i}{m_{mixture}}*100\%$

In such a way, given the form of the equation one could infer that the higher the mass of the i component, the higher its by-mass percent, it means that the component with the greatest mass will have the highest by-mass percent for the mixture. In such a way, since the component 1 was found to have a mass of 1.12 g, it will have the highest by-mass percent.

Best regards.

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