Answer:
Science is the study of the nature and its behaviour.
Technology refers to methods and devices that are the result knowledge.
A scientific model is a diagram of an object, process or system that is used to help make the subject matter of the diagram easier to understand.
Answer:
75 g
Step-by-step explanation:
<em>Step 1. </em>Calculate the molar mass of CaCO₃
Ca = 40.08
C = 12.01
3O = 3 × 16.00 = <u> 48.00
</u>
Total = 100.09 g/mol
<em>Step 2</em>. Calculate the mass of the pellet
Mass of CaCO₃ = 0.75 mol × (100.09 g/1 mol)
Mass of CaCO₃ = 75 g
Answer:
Here is the complete statement: The overall change in enthalpy of a reaction depend ONLY ON REACTANTS AND THE PRODUCTS.
Explanation:
Change in enthalpy of a chemical reaction refers to the heat change that is associated with a chemical change when the pressure is held constant. Generally, chemical reaction involves the breaking of chemical bonds in the reactants and the formation of new chemical bonds in the products. The breaking and forming of bonds involve heat change; the amount of heat that is given off and absorb in each chemical reaction depend on the type of reactants and products that are involved in the chemical reaction.
I think the statement is true. Manual handling of materials accounts for the primary source of injury in the workplace. This can be found in OSHA. <span>Manual materials handling is the </span>principal source of compensable injuries in the American work force<span>, and four out of five of </span>these injuries<span> will affect the lower back.</span>
Answer:
if you want to copper plate something you need an electrolyte made from a solution of a copper salt .
