Answer:
45.3°C
Explanation:
Step 1:
Data obtained from the question.
Initial pressure (P1) = 82KPa
Initial temperature (T1) = 26°C
Final pressure (P2) = 87.3KPa.
Final temperature (T2) =.?
Step 2:
Conversion of celsius temperature to Kelvin temperature.
This is illustrated below:
T(K) = T(°C) + 273
Initial temperature (T1) = 26°C
Initial temperature (T1) = 26°C + 273 = 299K.
Step 3:
Determination of the new temperature of the gas. This can be obtained as follow:
P1/T1 = P2/T2
82/299 = 87.3/T2
Cross multiply to express in linear form
82 x T2 = 299 x 87.3
Divide both side by 82
T2 = (299 x 87.3) /82
T2 = 318.3K
Step 4:
Conversion of 318.3K to celsius temperature. This is illustrated below:
T(°C) = T(K) – 273
T(K) = 318.3K
T(°C) = 318.3 – 273
T(°C) = 45.3°C.
Therefore, the new temperature of the gas in th tire is 45.3°C
The atomic mass unit is presently based on assigning an exact integral mass (in amu) to an isotope of carbon.
<h3>What is the atomic mass?</h3>
The atomic mass is a measurement used in physics and chemistry to denote the average atomic mass of a given element which is measured in the atomic mass unit or amu.
In conclusion, the atomic mass unit is presently based on assigning an exact integral mass (in amu) to an isotope of carbon.
Learn more about the atomic mass here:
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Answer:
The concentration of the borax solution is 0.1066 M
Explanation:
Step 1: Dtaa given
Volume of a sample of aqueous borax solution = 20.00 mL = 0.020 L
Molarity of H2SO4 = 1.03 M
Volume of the H2SO4 = 2.07 mL = 0.00207 L
Step 2: The balanced equation
Na2B4O7*10H2O(borax) + H2SO4 ⇆ Na2SO4 + 4 H3BO3 + 5 H2O
Step 3: Calculate molarity of borax solution
b*Ca*Va = a * Cb*Vb
⇒with B = the coefficient of H2SO4 = 1
⇒with Ca = the concentration of borax = TO BE DETERMINED
⇒with Va = the volume of borax = 0.020 L
⇒with a = the coefficient of borax = 1
⇒with Cb = the concentration of H2SO4 = 1.03 M
⇒with Vb = the volume of H2SO4 = 0.00207 L
Ca*0.020 L = 1.03 M * 0.00207 L
Ca = (1.03 * 0.00207) / 0.020
Ca = 0.1066 M
The concentration of the borax solution is 0.1066 M
Answer:
5/3 moles
Explanation:
3.moles.of H2 gives 3 moles of NH3
so 2.5 moles gives 5/3 moles.
Note:Apply simple. concept of unitary method.
