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4 years ago

8

A golf ball and bowling ball are moving and both have the same kinetic energy.Which one is moving faster? If they move at the sa

me speed, which one has more kinetic energy?

1 answer:

Gnoma [55]4 years ago

3 0

It is the bowling ball because it is heavy.

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What are called conductors of electricity

attashe74 [19]

Answer:

Some materials let electricity pass through them easily. These materials are known as electrical conductors. Many metals, such as copper, iron and steel, are good electrical conductors.

I hope it's helpful!

3 0

3 years ago

A chemist reacted 17.25 grams of sodium metal with an excess amount of chlorine gas. The chemical reaction that occurred is show

Afina-wow [57]

<u>Answer:</u> The actual yield of the product is 38.57 g

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(1)

We are given:

Given mass of Na = 17.25 g

Molar mass of Na = 23 g/mol

Putting values in equation 1, we get:

$\text{Moles of Na}=\frac{17.25g}{23g/mol}=0.75mol$

For the given chemical reaction:

$2Na+Cl_2\rightarrow 2NaCl$

By stoichiometry of the reaction:

2 moles of Na produces 2 moles of NaCl

So, 0.75 moles of Na will produce = $\frac{2}{2}\times 0.75=0.75mol$ of NaCl

We know, molar mass of $NaCl$ = 58.44 g/mol

Putting values in above equation, we get:

$\text{Mass of NaCl}=(0.75mol\times 58.44g/mol)=43.83g$

The percent yield of a reaction is calculated by using an equation:

$\% \text{yield}=\frac{\text{Actual value}}{\text{Theoretical value}}\times 100$ ......(1)

Given values:

Percent yield of the product = 88 %

Theoretical value of the product = 43.83 g

Plugging values in equation 1:

$88\% =\frac{\text{Actual yield}}{43.83g}\times 100\\\\\text{Actual yield}=\frac{88\times 43.83}{100}=38.57g$

Hence, the actual yield of the product is 38.57 g

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3 years ago

A white coloured solid salt “A” on heating gives out two colourless gases “B” and “C”.

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I think it say go rggdggy and do something with one of those other things and get a work order and get the t off and u I know I have

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3 years ago

Which describes why the magma moves in the direction of

jek_recluse [69]

The magma is heated and becomes less dense by the core moving it toward the crust.

Explanation:

Magma is a molten or partially molten rock form. Magma consists of silicate liquid, although carbonate and sulfide melts occur as well. It moves either to depth or to Earth’s surface and is ejected as lava. Suspended crystals and fragments of un-melted rock get transported in the magma dissolved volatiles may separate as bubbles and some liquid get crystallize during movement.

Several interrelated physical properties determine the characteristics of magma, including chemical composition, viscosity, dissolved gases, and temperature.Magma also form igneous rock.

Therefore the magma is heated and becomes less dense by the core moving it toward the crust.

5 0

4 years ago

Read 2 more answers

What evidence is Earth's Geological timescale mostley based from?

SCORPION-xisa [38]

Answer:

B. Geological Events and Lifeforms

Explanation:

The Earth's Geological time scale is mostly based on Geological Events and Lifeforms.

The Geological time scale provides a division of events on the earth into several time frames.

Each of the time units are based on events through the Earth's history and evolution of life.

The events are often recorded in rock strata and also as fossils which are the preserved remains of organisms.

3 0

3 years ago