Answer: 3.41 mL
Explanation: Solution:
Use Combine gas law to solve this problem.
P1V1 / T1 = P2V2 / T2
First convert temperature to K
T1 = 47 °C + 273 = 320 K
T2= 107°C + 273 = 380 K
Derive to find V2:
V2 = P1 V1 T2 / T1 P2
Substitute the values:
V2= 1.03 atm x 2.20 mL x 380 K /
320 K x 0.789 atm
= 3.41 mL
Cancel out the units of atm and K so the remaining unit is in mL.
- Part 1: Two elements with the same properties as Sodium(Na) are Lithium(Li) and Potassium(K).
- Part 2: Calcium(Ca) has 20 protons, 20 electrons and 20 neutrons.
- Elements that have the same properties ( physical and chemical ) are usually found on the same group. A group ( also called family ) in chemistry, means a column or a vertical line of elements in the periodic table of elements. Elements in the same group are similar because they have the same number of electrons in their outermost shell. The two most common elements found in the same group as Sodium(Na) are Lithium(Li) and Potassium(K). All three elements are in Group 1, have 1 electron in their outermost shell and are highly electropositive.
- The number of protons in any atom is always equal to the atomic number of that element, usually denoted by the letter Z. From the periodic table of elements, The atomic number of Calcium(Ca) is 20, so the number of protons will be 20. The number of electrons in any given atom is also equal to the number of protons in that atom, therefore the number of electrons in Calcium(Ca) is also 20. To find the number of neutrons, subtract the number of protons from the atomic mass as; Atomic mass = Number of protons + Number of neutrons Calcium(Ca) has an atomic mass of 40, so it's number of neutrons will be; 40 - 20 = 20 neutrons Hence, Calcium(Ca) has 20 protons, 20 electrons, and 20 neutrons.
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