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Nikolay [14]
3 years ago
15

Copper can be broken into simpler substances so what is it

Chemistry
1 answer:
allochka39001 [22]3 years ago
6 0
Cooper cannot be broken down into a simpler substance since it is an element meaning it had its own atoms.
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According to the oxygen-hemoglobin dissociation curve, PO2 in the lungs of 100 mm Hg results in Hb being 98% saturated. At high
Ad libitum [116K]

Answer:

Hb would be 78.4% saturated.

Explanation:

This problem can be solved by using simple unitary method.

At 100 mm Hg pressure of oxygen, Hb is saturated by 98%

So, at 1 mm Hg pressure of oxygen, Hb is saturated by \frac{98}{100}%

Hence, at 80 mm Hg pressure of oxygen, Hb is saturated by \frac{98\times 80}{100}% or 78.4%

Therefore, at 80 mm Hg pressure of oxygen in the lungs, Hb would be 78.4% saturated.

4 0
3 years ago
How many grams do 3.6 x10^20 atoms of silicon weigh?
creativ13 [48]
First, we divide the number of atoms of silicon given in the problem above by Avogadro's number 6.6022 x10^23. This will give us the number of moles of silicon. Then, we multiply the number of moles by the molar mass of silicon. 
number of moles = (3.6 x 10^20 atoms/6.022x10^23 atoms) = 5.97x10^-4 moles
Then, multiplying by the molar mass
                  (5.97x10^-4 moles)(28.0855 g/mol) = 0.017 grams
4 0
2 years ago
How is Earth’s outer layer different from a cracked hard-boiled egg?
Mekhanik [1.2K]
The Earth holds livings things and even the layer has more complex layers in it (Also it's not white) And of course there are no oceans
5 0
2 years ago
Read 2 more answers
If a molecule can hydrogen bond, does it guarantee that it will have a higher boiling point than a molecule that cannot? Explain
saul85 [17]

Answer:

a): not necessarily due to London Dispersion Forces and dipole-dipole interactions.  

b): not necessarily due to London Dispersion Forces.

Explanation:

There are three major types of intermolecular interaction:

  • Hydrogen bonding between molecules with H-O, H-N, or H-F bonds and molecules with lone pairs.
  • Dipole-dipole interactions between all molecules.
  • London dispersion forces between all molecules.

The melting point of a substance is a result of all three forces, combined.

Note that the more electrons in each molecule, the stronger the London Dispersion Force. Generally, that means the more atoms in each molecule, the stronger the London dispersion force. The strength of London dispersion force between large molecules can be surprisingly strong.

For example, \rm H_2O (water) molecules are capable of hydrogen bonding. The melting point of \rm H_2O at \rm 1\; atm is around 0 \; ^{\circ}\rm C. That's considerably high when compared to other three-atom molecules.

In comparison, the higher alkane hexadecane (\rm C_{16}H_{34}, straight-chain) isn't capable of hydrogen bonding. However, under a similar pressure, hexadecane melts at around 18\; ^{\circ}\rm C above the melting point of water. The reason is that with such a large number of atoms (and hence electrons) per molecule, the London dispersion force between hexadecane molecules could well be stronger than that the hydrogen bonding between water molecules.

Similarly, the dipole moments in HCl (due to the highly-polar H-Cl bonds) are much stronger than those in hexadecane (due to the C-H bonds.) However, the boiling point of hexadecane under standard conditions is much higher (at around 287\; \rm ^\circ C than that of HCl.

3 0
3 years ago
All-sized companies are required to have a written fire prevention plan.
dlinn [17]

Answer: i say yes

and the information i got why is down below that way you can see if im right if you dont trust me

What OSHA standards require a fire prevention plan?

A fire prevention plan must be in writing, be kept in the workplace, and be made available to employees for review. However, an employer with 10 or fewer employees may communicate the plan orally to employees. The name or job title of employees responsible for the control of fuel source hazards.

Explanation:

While OSHA strongly recommends that all employers have an FPP, you are only required to have a fire prevention plan when an applicable OSHA standard requires it. Those standards include: Ethylene oxide, §1910.1047. Methylenedianiline, §1910.1050.

7 0
2 years ago
Read 2 more answers
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