I am having trouble with my sig figs

Many scientific data are reported at 25°C. What is this temperature in kelvins and in degrees Fahrenheit?

I got 3.0e2 degrees kelvin since it will have to have two sig figs but it said it was wrong

25 C is 77.0 F or 298.16 K.

I would say your rounding it off to 3.0*10^2 K, for two significant figures, is correct.

You just confused the rules for adding and subtracting with sig figs for the rule for multiplying and dividing. 25 Celsius would be 298 Kelvins, and the rule for adding is to look at the least number of decimal places. Nothing before the decimal matters, and since neither 25 or 273 have any decimals, the answer is 298 K.

To convert Celsius to Kelvin, you need to add 273.15 to the temperature in Celsius. Let's do the calculation step by step:

1. Start with the given temperature in Celsius, which is 25°C.
2. Add 273.15 to 25 to get the temperature in Kelvin.

25 + 273.15 = 298.15

The temperature of 25°C is equal to 298.15 K when rounded to two significant figures.

Now, let's convert the temperature to degrees Fahrenheit. The formula for converting from Celsius to Fahrenheit is:

°F = (°C × 9/5) + 32

1. Start with the temperature in Celsius, which is 25°C.
2. Multiply 25 by 9/5 and then add 32.

(25 × 9/5) + 32 = 77°F

The temperature of 25°C is equal to 77°F when rounded to two significant figures.

To convert the temperature from Celsius to Kelvin, you need to add 273.15 to the value.

To convert the temperature from Celsius to Fahrenheit, you can use the following formula:
°F = (°C * 9/5) + 32

Let's calculate the temperature in Kelvin first:
25°C + 273.15 = 298.15 Kelvin

Now, let's calculate the temperature in Fahrenheit:
°F = (25 * 9/5) + 32 = 77°F

So, the temperature in kelvins is 298.15 K, and in degrees Fahrenheit, it is 77°F.

In terms of significant figures, since the original value given (25°C) is reported to two significant figures, the converted values should also be reported to two significant figures. Therefore, 298.15 K should be rounded to 3.0e2 K, and 77°F should be rounded to 8e1°F.