Answer:
978 J
General Formulas and Concepts:
<u>Thermodynamics</u>
Specific Heat Formula: q = mcΔT
- q is heat (in J)
- m is mass (in g)
- c is specific heat (in J/g °C)
- ΔT is change in temperature (in °C)
Explanation:
<u>Step 1: Define</u>
[Given] <em>c</em> = 4.18 J/g K
[Given] <em>m</em> = 6.00 g
[Given] ΔT = 75.0 °C - 36.0 °C = 39.0 °C
[Solve] <em>q</em>
<u>Step 2: Find </u><em><u>q</u></em>
- Substitute in variables [Specific Heat Formula]: q = (6.00 g)(4.18 J/g K)(39.0 °C)
- Multiply [Cancel out units]: q = 978.12 J
<u>Step 3: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
978.12 J ≈ 978 J
Answer:
Diffusion is driven by differences in concentration. When chemical substances such as perfume are let loose in a room, their particles mix with the particles of air. Diffusion in gases is quick because the particles in a gas move quickly. It happens even faster in hot gases because the particles of gas move faster.
<span>A pure substance contains only one kind of molecule, and a mixture is a combination of two or more pure substances.</span>
Answer:
is used in scientific measurements.
Explanation:
A complete metric system of units of measurements for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric....