Answer:
A washing machine pushed along a floor.
An iron being pushed across material.
Answer:
Explanation:
Process of desalination is used to remove salt from seawater for provision of fresh water
Answer:
1.5L of NaNO3 must be present
Explanation:
<em>That contains 200g of sodium nitrate. Round to 2 significant digits</em>
To solve this question we need to convert the mass of NaNO3 to moles using its molar mass (85g/mol). With the moles and the molar concentration we can find the volume in liters of the solution:
<em>Moles NaNO3:</em>
200g * (1mol / 85g) = 2.353 moles NaNO3
<em>Volume:</em>
2.353 moles NaNO3 * (1L / 1.60moles) =
<h3>1.5L of NaNO3 must be present</h3>
Hello!
A reaction where the products have less chemical potential energy than the reactants had originally is called an exothermic reaction. Although the scientist didn't observe light or sound, an observation that would support her prediction is the rise in temperature after the reaction has completed. Exothermic reactions release energy in the form of heat, and the temperature would rise in an exothermic reaction.
Have a nice day!
