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Rudik [331]
3 years ago
6

Is a CAS number a physical or chemical property

Chemistry
1 answer:
katrin [286]3 years ago
5 0
Chemical


Hope that helps
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If the atomic number of an element is 6 and its mass number is 13, how many protons are contained in the nucleus
kakasveta [241]

Answer

the atomic number is also the proton number and so the number of protons are 6.

6 0
3 years ago
Gaseous ethane, C2H6, burns in the presence of oxygen
Gnesinka [82]

Moles of Carbon dioxide(CO2) = 2

<h3>Further explanation</h3>

Given

Reaction

2 C2H6 (g) + 7 O2 (g) —+ 4CO2 (g) + 6 H20 (g)

Required

moles of carbon dioxide

Solution

The reaction coefficient shows the mole ratio of the compounds in the reaction equation (reactants and products)

From the equation, mol ratio of C2H6 : CO2 = 2 : 4, so mol CO2 :

mol CO2 = (4/2) x mol  C2H6

mol CO2 = 2 x 1

mol CO2 = 2

3 0
3 years ago
3. List the temperatures in order from warmest to
amid [387]

Answer:

3°F, 0°F, -11°F,  -16°F, -20°F

Explanation:

The Fahrenheit scale is a temperature scale proposed in 1724  by the physicist Daniel Fahrenheit.

In this scale:

- The freezing point of water is set at 32 degrees

- The boiling point of water is set at 212 degrees

One degree in the Fahrenheit scale is indicated with the symbol ^{\circ}F.

The equivalence between temperature in Celsius degrees and Fahrenheit degrees is as follows:

T(^{\circ}C)=\frac{5}{9}(T(^{\circ}F)-32) to convert from Fahrenheit to Celsius

T(^{\circ}F)=\frac{9}{5}(T(^{\circ}C)+32) to convert from Celsius to Fahrenheit

The Fahrenheit  scale is an increasing monotonic scale, it means that temperature goes from negative values towards positive values without interruption. Therefore, the temperatures listed from warmest to coldest are:

3°F, 0°F, -11°F,  -16°F, -20°F

8 0
4 years ago
Select the correct structure that
gogolik [260]

Answer:

C. Both

Explanation:

5 0
3 years ago
Read 2 more answers
If the average speed of a helium atom at a certain temperature is 1120 m/s what is the speed in miles per hour?
nadezda [96]

40 miles per hour because if you think about it there is 1120 m/s


5 0
3 years ago
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