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3 years ago

Explain three main differences between bacteria and virus.

Chemistry

1 answer:

Harlamova29_29 [7]3 years ago

6 0

A virus can effect the body significantly as with bacteria it’s not as harmful to the body.

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What is the predicted ionic charge of an element in group via/16?

Serga [27]

Generally, the top elements in group 16 will have a charge of -2, although the entire group isn't standardized.

8 0

3 years ago

What is 4.50+3.4+12.09 ?

klasskru [66]

Answer:

19.99

Explanation:

The steps are what I did, so no need to do it the exact same!

1. Add 4.50 and 3.4

4.50 + 3.4 = 7.9

2. Add 7.9 and 12.09

7.9 + 12.09 = 19.99

Hope this helps!

8 0

3 years ago

Read 2 more answers

Which is more stable? half filled or full filled? Why is it more stable?

olchik [2.2K]

A full filled atom is more stable than the half filled atom. This is because it has an equal number of protons and electrons. The protons cancel out the electrons and thus giving it a net charge of zero. It cannot be further ionized.

4 0

4 years ago

Consider a galvanic cell based on the reaction Al^3+_(aq) + Mg_(s) rightarrow Al_(s) + Mg^2+ _(aq) The half-reactions are Al^3+

grin007 [14]

Answer: The standard cell potential of the cell is -0.71 V

Explanation:

The half reactions follows:

Oxidation half reaction: $Mg\rightarrow Mg^{2+}+2e^-;E^o_{Mg^{2+}/Mg}=-2.37V$ ( × 3)

Reduction half reaction: $Al^{3+}(aq.)+3e^-\rightarrow Al(s);E^o_{Al^{3+}/Al}=-1.66V$ ( × 2)

The balanced cell reaction follows:

$2Al^{3+}(aq.)+3Mg(s)\rightarrow 2Al(s)+3Mg^{2+}(aq.)$

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{cathode}-E^o_{anode}$

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

Putting values in above equation, we get:

$E^o_{cell}=-2.37-(-1.66)=-0.71V$

Hence, the standard cell potential of the cell is -0.71 V

8 0

3 years ago

Compound X has a molar mass of 135.13 and the following composition: element mass % carbon 44.44% hydrogen 3.73% nitrogen 51.83%

geniusboy [140]

Hello!

First, let's see what a molar mass is. A molar mass is how much a mole weighs, or how much 6.02214076×10²³ of an element weighs.

Now, let's find the molar mass of each of these three elements.

Carbon: 12.0107 g/mol

Hydrogen: 1.00784 g/mol

Nitrogen: 14.0067 g/mol

Now, see how much of the molar mass of compound x each of these contributes.

Carbon: 44.44% * 135.13 = 60.051772 g/mol

Hydrogen: 3.73% * 135.13 = 5.040349 g/mol

Nitrogen: 51.83% * 135.13 = 70.037879 g/mol

Finally, calculate how many atoms there are in the molecule. Do this my dividing the "how much they contribute to the molar mass" by the molar mass.

Carbon: 60.051772 / 12.0107 = 5

Hydrogen: 5.040349 / 1.00784 = 5

Nitrogen: 70.037879 / 14.0067 = 5

Therefore, we know that there are 5 Carbons, 5 hydrogens, and 5 nitrogens.

Put this all together to get the molecular formula: C5H5N5 (note that the numbers should be written as subscript)

Hope this helps!

7 0

3 years ago