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3 years ago

What do I write? Please hurry

Chemistry

1 answer:

scoundrel [369]3 years ago

5 0

Answer:

Plants wilt when the turgor turns to zero. From diminished water in cells. The rate of water being lost is greater then the water being absorbed.

Something like this. NOT EXACTLY THIS this is just an example.

I didn't know anything about this topic but I looked it up. For the other words I would look up the other words and see what they have to do with plants withering.

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When there is unequal sharing between two atoms of the electrons in a bond, which type of bond is it?

dexar [7]

Polar covalent, it is what happens when there is unequal bond between two atoms, where one has a slightly negative charge and one has a slightly positive charge.

3 0

3 years ago

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the normal human eye responds to visible light of wavelength range from about 390 to 710nm. Determine the frequency range of the

antoniya [11.8K]

Answer:

$\:$

A typical human eye will respond to wavelengths from 390 to 710 nm (in vacuum or air). In terms of frequency this corresponds to a band in the vicinity of 420–790 THz.

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2 years ago

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Why did Cyrus Field want to build a transatlantic telegraph?

Paul [167]

In 1854, Cyrus West Field conceived the idea of the telegraph cable and secured a charter to lay a well-insulated line across the floor of the Atlantic Ocean. Obtaining the aid of British and American naval ships, he made four unsuccessful attempts, beginning in 1857.

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2 years ago

The number of atoms in 2.50 mol Cr

Slav-nsk [51]

Answer:

1.51 x 10²⁴atoms

Explanation:

Given parameters:

Number of moles of Cr = 2.50mol

Solution;

what is a mole;

a mole of any substance is the amount of substance that contains the avogadro's number of particles which is 6.02 x 10²³ particles

The particles here can be atoms, protons, neutrons, electrons e.t.c

1 mole contains 6.02 x 10²³ atoms

2.5 moles will contain 2.5 x 6.02 x 10²³ = 1.51 x 10²⁴atoms

8 0

3 years ago

Mass in grams of 6.023×1023 atom of Ca

Mademuasel [1]

Answer:

$\boxed {\boxed {\sf 40.08 \ grams}}$

Explanation:

First, find the molar mass of calcium (Ca). This can be found on the Periodic Table.

40.08 g/mol

Next, find the number of moles.

Avogadro's Number tells us the number of atoms in one mole.

It is 6.023*10²³

Therefore, there are 6.023*10²³ atoms in 1 mole.

We have 6.023*10²³ atoms of calcium, so it must also be 1 mole of calcium.

Finally, find the mass. Set up a proportion using the molar mass of calcium.

$1 \ mol \ Ca * \frac{40.09 \ g}{1 \ mol \ Ca}$

Multiply. The moles (mol Ca) will cancel.

$1 * 40.08 \ g$

$40.08 \ g$

There are <u>40.08 grams </u>in 6.023*10²³ atoms of calcium.

5 0

3 years ago