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Iteru [2.4K]
3 years ago
12

What is a rule for determining the atomic mass of an atom or ion ?

Chemistry
1 answer:
In-s [12.5K]3 years ago
4 0

Answer:

Mass = Number of neutrons + Atomic number (aka number of protons)

Explanation:

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3 years ago
Which element has the largest density at stp
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I believe it is Sodium. I could be wrong though.
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Plzz someone help me ASAP!
irina1246 [14]

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3 0
3 years ago
A sample of zinc is heated to a temperature of 77.4ºC, then placed in a calorimeter containing 65.0 g of water. Temperature of w
ycow [4]

180.189 g was the mass of the zinc sample with a specific heat of zinc is 0.390 j/g°C.

<h3>What is specific heat capacity?</h3>

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

Using specific heat capacity formula here:

C_{Zn} × m_{Zn}×  ΔT_{Zn} = C_{H_2O}× m_{H_2O} ×  ΔT_{H_2O}

0.390J/g°C × m_{Zn} ×77.4ºC = 4.184J/g°C×  65.0g ×  20.00ºC.

m_{Zn} = 180.189 g

Hence, 180.189 g was the mass of the zinc sample.

Learn more about the specific heat capacity here:

brainly.com/question/19339241

#SPJ1

5 0
2 years ago
Why do we have a leap year in our calendar every four years?
Alla [95]

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every 4 years we add an extra day, February 29th, to our calendars these extra days called leave days help synchronize our human created calendars with us orbit around the sun and the actual passing of our seasons

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3 years ago
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