Answer:
Difference in temperature
Explanation:
According to thermodynamics, heat transfer occurs when heat from a high temperature reservoir moves to a low temperature reservoir. For heat to be transferred, the two objects should have different temperatures with one having more temperature than the other. Heat transfer in solids is by conduction, in fluids is by convection and by radiation.
Answer:
7.99 mol
Explanation:
Step 1: Given data
Molecules of chlorine gas: 4.81 × 10²⁴ molecules
Step 2: Calculate how many moles of chlorine gas corresponds to 4.81 × 10²⁴ molecules of chlorine gas
In order to convert molecules to moles, we will use Avogadro's number: there are 6.02 × 10²³ molecules of chlorine gas in 1 mole of molecules of chlorine gas.
4.81 × 10²⁴ molecules × (1 mol/6.02 × 10²³ molecules) = 7.99 mol
Answer:
Scientific Question: ... I will boil water and add a substance like salt to see if the boiling point increases.
Answer:
Hypothesis
Explanation:
A hypothesis is often described as a scientific guess.
Scientific method is a series of systematic approach developed to carry out scientific investigations.
These methods are:
Observation ----- Hypothesis --------- Theory ------------ Law
A hypothesis is a scientific explanation to an observation. It provides a platform for carrying out experiments to test ideas and to see how repeatable an observation can be.
When the sweat evaporates in an endothermic exactions heat is also 'taken' from the body