Answer:
In very hot, humid weather you might feel the air is heavier because moving around seems to take more energy than on dry days. Sticky days probably feel “heavier” because heat and high humidity slows the evaporation of perspiration, your body grows hotter and this saps your strength
Explanation:
Answer:
2 HNO3 + CaCO3 = Ca(NO3)2 + H2O + CO2
Explanation:
Given Equation :
Balanced Equation
Answer is - Decreasing surface area of a solid reactant, rate of reaction can be slowed down.
Explanation: The quantity of a reactant species consumed or the quantity of product species formed in unit time in a chemical reaction is called rate of reaction. With passage of time, concentration of reactant decreases and concentration of product increases. Rate of reaction depends on various factors like- concentration of reactant, temperature, nature of reactant, catalyst and surface area of reactant.
By increasing the concentration of the reactants, rate of the reaction increases.
Presence of catalyst increases the rate of reaction.
With increase in temperature, kinetic energy of molecules increases which results to more number of effective collisions, so, rate of reaction increases.
With increase in the surface area of reactant, more number of molecules can react at a time and by decreasing the surface area of solid reactant rate of the reaction will diminish/ decrease.
Answer:
55.4324℃
Explanation:
Q=cm△t
50J = 0.902J/（g·℃） x 1g x △t
△t =55.4324℃
The negative ion in aqueous sodium hydroxide, NaOH(aq) is hydroxide ion, OH-.
<h3>What is a neutralization reaction?</h3>
A neutralization reaction is a reaction between an acid and a base to form salt and water only.
The reaction between vinegar and NaOH is a neutralization reaction which produces a salt and water only.
NaOH is composed of a positive sodium ion, Na+ and a negative hydroxide ion, OH-
Therefore, the negative ion in the NaOH(aq) used in this titration is hydroxide ion, OH-.
Learn more about hydroxide ion at: brainly.com/question/3078877
