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Mariulka [41]
3 years ago
6

Beryllium is a rare metal that is gray in color, strong, and lightweight. The following data was obtained from a calorimeter exp

eriment: 5 sets of equations: m beryllium equals 10.1 grams. M water equals 38.8 grams. Delta T beryllium equals final T minus initial T equals 27.7 degrees Celsius minus 100 degrees Celsius. Delta T water equals Final T minus initial T equals 28.4 degrees Celsius minus 20.2 degrees Celsius. C water equals 4.18 joules per gram per degree Celsius. The specific heat of beryllium is J/g°C
Chemistry
2 answers:
arsen [322]3 years ago
8 0

Answer:

Explanation:

Correct Answer is : 1.82 J/g°C

Elanso [62]3 years ago
5 0

Answer:  1.82 J/g°C

Explanation:

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When solving an equation using Gay-Lussac's law, which of the following steps do not apply? A. List your knowns and unknowns. B.
suter [353]

Answer:

C. Plug the unknowns into the ideal gas law formula.

Explanation:

Gay-Lussac's law states that:

"For a constant mass of an ideal gas kept at constant volume, the pressure of the gas is directly proportional to its absolute temperature"

Mathematically, it can be written as:

\frac{p_1}{T_1}=\frac{p_2}{T_2}

where

p1 is the initial pressure

T1 is the initial temperature (in Kelvin)

p2 is the final pressure

T2 is the final temperature (in Kelvin)

Therefore, in order to solve for one of the 4 variables, the following steps must be adopted:

A. List your knowns and unknowns.

B. Convert temperature to kelvin.

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3 years ago
Is it living or nonliving?
Fittoniya [83]

Answer:

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8 0
3 years ago
Ultraviolet radiation has a frequency of 6.8×1015 Hz. What is the energy associated with this frequency?
stellarik [79]

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4 years ago
With 21 g of Zinc, and 7 g of CuCl2, how much ZnCl2 is made in grams?
mina [271]

Answer: 7.07 grams

Explanation:

To calculate the moles :

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

\text{Moles of} zinc=\frac{21g}{65g/mol}=0.32moles

\text{Moles of} CuCl_2=\frac{7g}{134g/mol}=0.052moles

Zn+CuCl_2\rightarrow Cu+ZnCl_2

According to stoichiometry :

1 mole of CuCl_2 require 1 mole of Zn

Thus 0.052 moles of CuCl_2 will require=\frac{1}{1}\times 0.052=0.052moles  of Zn

Thus CuCl_2 is the limiting reagent as it limits the formation of product and Zn is the excess reagent.

As 1 mole of CuCl_2 give = 1 mole of ZnCl_2

Thus 0.052 moles of CuCl_2 give =\frac{1}{1}\times 0.052=0.052moles  of ZnCl_2

Mass of ZnCl_2=moles\times {\text {Molar mass}}=0.052moles\times 136g/mol=7.07g

Thus 7.07 g of ZnCl_2 will be produced from the given masses of both reactants.

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3 years ago
Acid rain is the direct result of acid released by burning fossil fuels. true or false
Airida [17]
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3 years ago
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