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3 years ago

An ion of iron has an 26 protons 30 neutrons and 23 elctrons,what are it’s atomic number atomic mass and net charge

Chemistry

1 answer:

natita [175]3 years ago

5 0

Answer:

Protons=26

Electron=23

Neutrons=30

Atomic mass= 26 +30 = 56

Atomic number= 26

Net charge= +26 - 23 = +3 charge

Explanation:

protons and neutrons make up the atomic mass.

A standard element has the same amount of protons and electrons which make up the atomic mass. Because the electrons (-) are less than the protons(+) the charge is a positive charge.

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A sample of seawater contains 1.3 g of calcium ions in 3,100 kg of solution. what is the calcium ion concentration of this solut

IrinaVladis [17]

A unit of ppm has an acronym of parts per million. The equivalent units of ppm is therefore mg/L and mg/kg. So the ppm is:

mass Ca+ = 1.3 g = 1300 mg

ppm = 1300 mg / 3100 kg

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3 years ago

Animals adapted for lack of water and extremes in temperature are found in which biome?

Arturiano [62]

Answer:

Tundra.

Explanation:

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3 years ago

Read 2 more answers

Please help with #2 and #3

Vaselesa [24]

Answer:

2. $V_2=17L$

3. $V=82.9L$

Explanation:

Hello there!

2. In this case, we can evidence the problem by which volume and temperature are involved, so the Charles' law is applied to:

$\frac{V_2}{T_2}=\frac{V_1}{T_1}$

Thus, considering the temperatures in kelvins and solving for the final volume, V2, we obtain:

$V_2=\frac{V_1T_2}{T_1}$

Therefore, we plug in the given data to obtain:

$V_2=\frac{18.2L(22+273)K}{(45+273)K} \\\\V_2=17L$

3. In this case, it is possible to realize that the 3.7 moles of neon gas are at 273 K and 1 atm according to the STP conditions; in such a way, considering the ideal gas law (PV=nRT), we can solve for the volume as shown below:

$V=\frac{nRT}{P}$

Therefore, we plug in the data to obtain:

$V=\frac{3.7mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm}\\\\V=82.9L$

Best regards!

6 0

3 years ago

What process at the surface of the Earth is part of the formation of sedimentary rocks?

OLga [1]

Answer:

Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.

please give brainliest

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3 years ago

What are the challenges for a "sustainable" world of lithium ion batteries?

Neporo4naja [7]

The Lithium-ion Battery Problem

Overheating. They overheat and explode if charged too fast.

Short life time. They die after less than 1,000 charge/discharge cycles.

Flammable. They use chemicals that are flammable. ...

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Underperform in extreme temperatures. ...

Expensive casing. ...

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3 years ago