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What is the mass number of 40Ca?
40: 40Ca is an alternative method of writing calcium-40.
What is the number of protons neutrons and electrons in an atom of zirconium 90 that has overall charge and an atomic number of 40?
Zirconium-90 (90Zr) has the atomic number 40, and it has 40 protons. The question asked about a specific isotope of zirconium, and the 90 in this isotope represents the number of protons plus the number of neutrons in 90Zr. The math is simple, and 90 minus 40 tells us there are 50 neutrons in this atom. As the atom was said to be electrically neutral, so that means the number of electrons will be equal to the number of protons. The atom will, therefore, have 40 electrons.
What is -40 degrees Celsius in Fahrenheit?
Believe it or not ... -40°F.The two scales have equal numerical values at this temperature.Its the same, -40 degrees Celsius = -40 degrees Fahrenheit.Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is also -40 degrees Fahrenheit.(-40) degrees Celsius = (-40) degrees Fahrenheit-40 degrees Celsius = -40 degrees FahrenheitAnswer: -40 ºC = -40 ºF-40
What is -40 Centigrade equal in Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is also -40 degrees Fahrenheit.
Which element has a mass number of 40 and only has 2 valance electrons?
The element that has a mass number of and two valence electrons is an isotope of calcium.
What number do the roman nmberal XL represent?
40
What number does the roman nuerals XL represent?
XL = 40
What does xxxix represent in roman numerals?
The Roman numeral XXXIX represents the number 39. X (10) is subtracted from L (50) in order to express the number 40, and then I (1) is subtracted from 40 to represent 39.
Does the number 40 in the Bible represent a demon?
No, the number 40 in the Bible does not represent a demon. It is a symbolic number that often represents a period of testing, trial, or preparation. For example, Jesus fasted for 40 days and nights in the wilderness to prepare for his ministry.
Which isotope of argon is most commonly found?
Argon-40 is the most commonly found isotope of argon on Earth, with a natural abundance of about 99.6%. This isotope is stable and is produced from the radioactive decay of potassium-40 in the Earth's crust.
What is the XL represent in roman numerals?
Xl = -10+50 = 40
What number in your numeral system does the Roman numeral XL represent?
XL equals 40.
What is important about the number 40?
40 days and 40 nights of rain occur in the story of Noah's ark.Answer:In biblical numerology, the number 4 or multiples thereof, represent a 'trial period or a testing time.
What do the superscript and subscript mean in the notation 40 K represent 19?
The subscript (19) indicates that this atom has 19 protons (as well as 19 electrons). The supersript (40) denotes that it has 40 protons and neutrons, hence we can infer that it has 21 neutrons.
What is the reciprocal of 40?
The reciprocal of a number is simply 1 divided by that number. Therefore, the reciprocal of 40 is 1/40. In mathematical terms, if we represent the reciprocal of 40 as x, then x = 1/40. This reciprocal value is important in various mathematical operations and calculations.
What number does a gross represent Roman numerals?
12 x 12 = 144 = CXLIV = 100 + 40 + 4
What is integer to represent 40 floors above ground level?
To represent 40 floors above ground level with an integer, you would simply use the number 40. This integer indicates the specific floor number above the ground level, which is typically considered floor 0 or floor 1, depending on the building's numbering system. Thus, 40 directly corresponds to the 40th floor above ground.
