Reference no: EM132610623

Question 1: The density of gold is 19.3 g/cm³. What is the mass of a bar of gold in kilograms that measures 6.00in x 4.00in x 2.00in?

Question 2: The temperature of solid is 26.6 F. what is it's temperature in Celsius and in Kelvin?

Question 3: Compute the following and report the answer with correct number of significant digits.
i) 37.76 - 3.907 + 226.4
ii) 0.556 x(40-32.5)
iii) (4.0x10⁴ x 5.021 x10^-3/7.34993x10²)
iv) 0.0032 x 273

Question 4: Decide whether a physical or chemical change has occurs
1. Your friend decides to toast a piece of bread, but leaves in the toaster too long. The bread is black and the kitchen is full of smoke.
2. A student removes a loaf of bread hot from the oven. The student cuts a slice off the loaf and spreads butter on it.
3. You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it.

Question 5: If a swimmer swims 90.0 yards in seven minutes, how many meters will she swim in 2.0 hr?

Question 6: Compute the following and report you answer with correct significant digits.
a) (6.10 x 10⁷)x(3x10⁷) =
b) [(2.1 + 4.04) x(6.78 x 5.289)]/(8.4 - 4.46)
c) 4.0 x10⁴ x 5.02 x10^-3 / 7.34993 x 10²
d) (57.6 x 3) % (34 x 3.00 x 87.507)

Question 7: The man runs a km in 6 min. Calculate his speed in
a) m/min
b) Cm/s

Question 8: An Average human is expected to live to be 70 years old. How many seconds would have elapsed during this person's lifetime?