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zaharov [31]
3 years ago
5

Which of the following is NOT a compound? H20 CO2 02 CO

Chemistry
1 answer:
marin [14]3 years ago
3 0
CO isn’t a compound so it’s D
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Which type of radiation is the main hazard during radiological procedures
Alla [95]
The main <span>hazard </span>is the Radiation and the Gamma rays that are dispersed 
3 0
4 years ago
What are the possible values of ml for an electron in a d orbital?
spin [16.1K]
The correct answer for the question that is being presented above is this one: "-2, -1, 0, 1, 2." T<span>he possible values of ml for an electron in a d orbital are -2, -1, 0, 1, 2. </span>Since the allowed values for mℓ range from −ℓ to +ℓ, once you know the value for ℓ you know the values for mℓ."
3 0
3 years ago
What volume of product is produced when 20.0 Mg of liquid hydrogen reacts with
mihalych1998 [28]

Answer: The volume of product formed is 0.26 L

Explanation:

\text{Moles of solute}=\frac{\text{given mass}}\times{\text{Molar Mass}}    

\text{Moles of} H_2=\frac{0.02g}{2g/mol}=0.01moles

2H_2(l)+O_2(l)\rightarrow 2H_2O(g)

As O_2 is the the excess reagent, H_2 is the limiting reagent as it limits the formation of product.

According to stoichiometry :

2 moles of H_2 give = 2 moles of H_2O

Thus 0.01 moles of H_2 will give =\frac{2}{2}\times 0.01=0.01moles  of H_2O

According to ideal gas equation:

PV=nRT

P = pressure of gas = 101.325 kPa = 1 atm

V = Volume of gas = ?

n = number of moles = 0.01

R = gas constant =0.0821Latm/Kmol

T =temperature =40^0C=(40+273)K=313K

V=\frac{nRT}{P}

V=\frac{0.01mol\times 0.0821L atm/K mol\times 313K}{1atm}=0.26L

Thus the volume of product formed is 0.26 L

8 0
3 years ago
b. Describe how the temperature changes within a phase and during a phase change as heat is added to a water sample. (2 points)
Rudik [331]
Hello!

Take for example the heating of water.

When heating liquid water from room temperature (25 °C) to the boiling point (100 °C), adding heat results in a direct increase in the temperature. This kind of heat is called sensible heat, because we can sense the effect of the added energy.

But when you reach 100 °C, there is a phase change from liquid to vapour, and the added heat is used to produce the phase change, and no increase in temperature is observed, only the phase change. This kind of heat is called latent heat. 

Have a nice day!

6 0
3 years ago
Solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas. Express your answer as a chemical equa
Gwar [14]

Answer:

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

Explanation:

Hello!

In this case, when solid calcium carbonate, CaCO3 (s), is decomposed by the action of thermal energy (heat), solid calcium oxide, CaO (s) and carbon dioxide gas, CO2 (g) are yielded via the following reaction:

CaCO_3\rightarrow CaO+CO_2

However, since calcium carbonate is solid as well as calcium oxide and carbon dioxide is given off as a gas, we write:

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

Which also balanced.

Best regards!

8 0
3 years ago
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