1. Suppose that a recipe calls for an oven temperature of 189°F. Convert this temperature to degrees Celsius and to kelvins.
--I found that Celsius is 87.2, plug it in K=C+273, got 360.2 but it was wrong.
(e) Neon, the gaseous element used to make electronic signs, has a melting point of -248.6°C and a boiling point of -246.1°C. Convert these temperatures to kelvins.
-- Plugged it in K=C+273 and had the same exact problem as the top too. Help me!! What am I doing wrong?
1.
Recall that the formula for converting deg F to deg C is
C = (5/9)*(F - 32)
Substituting,
C = (5/9)*(189 - 32)
C = (5/9)*(157)
C = 87.2 deg Celsius
To convert to Kelvin,
K = C + 273.15
K = 87.2 + 273.15
K = 360.37 Kelvin
2.
K = C + 273
K = -248.6 + 273.15
K = 24.55 Kelvin (melting point)
K = C + 273
K = -246.1 + 273.15
K = 27.05 Kelvin (boiling point)
Your answers are correct. I don't know why they're wrong, probably there's a typo or something...
Hope this helps~ :)
To convert temperatures from Fahrenheit to Celsius, you can use the formula:
C = (F - 32) * 5/9
To convert temperatures from Celsius to kelvin, you can use the formula:
K = C + 273.15
Now let's apply these formulas to the given questions:
1. Converting 189°F to Celsius:
C = (189 - 32) * 5/9 = 87.2°C (correct)
Now let's convert this Celsius value to kelvin:
K = 87.2 + 273.15 = 360.35K (correct)
So, your calculated Celsius and kelvin values are correct.
For the second question, let's convert the temperatures of Neon to kelvins:
Neon melting point: -248.6°C
K = -248.6 + 273.15 = 24.55K (correct)
Neon boiling point: -246.1°C
K = -246.1 + 273.15 = 27.05K (correct)
So, your calculations for converting Neon temperatures to kelvins are also correct.
It seems like you made a slight error in your calculations when converting to kelvins. Double-check your calculations to ensure you are adding/subtracting the correct values.