0
Which of the following is the first positive term of the arithmetic sequence: -11, -8, -5, …?
Add your answer:
Earn +20 pts
Which one of the following chemical equations is balanced a 2naci h2so4 hcl naso4 b nh3 h2o 2nh4oh c koh h2so4 khso4 h2o d 2na s 2nas?
koh + h2so4-khso4 +h2o
What is true about balanced equations?
The amount on one side of the '=' must balance the amount on the other.
What is the purpose of writing a word equation in chemistry?
It is one way of representing a chemical reaction: it tells you what reacts and what is produced. Word equations are an efficient way to describe chemical changes, to help chemists recognize patterns, and to predict the products of a chemical reaction.
When modeling word problems as mathematical equations what is a synonym for the division operation?
Not sure what you mean by "the following"; but one word that is often related to division is "per".
Which of the following is not one of the four provisions under EPCRA?
non-hazardous chemical inventories
Which one of the following chemical equations is balanced a 2naci h2so4 hcl naso4 b nh3 h2o 2nh4oh c koh h2so4 khso4 h2o d 2na s 2nas?
koh + h2so4-khso4 +h2o
Which one of the following is a step for balancing chemical equations?
Determine how long the reaction will take. apex
What is a scientific reaction?
A scientific reaction is a process in which one or more substances are changed into one or more new substances through the breaking and forming of chemical bonds. These reactions follow the laws of physics and chemistry and can be described by balanced chemical equations.
which one of the following is not a symbol used in chemical equations (s) (d) (g) (aq)?
(d) is not a symbol used in chemical equations. The symbols (s) represents a solid, (g) represents a gas, and (aq) represents an aqueous solution.
What does stoichiometry use to relate moles of one molcule to moles of another?
Stoichiometry uses the coefficients of balanced chemical equations to relate moles of one molecule to moles of another. It allows for the conversion of quantities between reactants and products in a chemical reaction.
What is true about balanced equations?
The amount on one side of the '=' must balance the amount on the other.
What two things must we remember when balancing chemical equations?
When balancing chemical equations, it is important to remember to adjust coefficients (not subscripts) to ensure that the number of atoms of each element is equal on both sides of the equation. Additionally, it's crucial to balance one element at a time and to double-check the final equation to confirm that it is balanced.
What is the Balanced equation for a glow stick?
The chemical reaction in a glow stick involves the oxidation of a dye molecule by hydrogen peroxide in the presence of a base. One possible balanced equation for this reaction is: C10H18O + H2O2 → 10CO2 + 9H2O. However, variations in the specific chemicals used in glow sticks may result in different balanced equations.
Which one of the following equations represents the y- axis?
X = 0
What symbolic representation of a chemical reaction?
A chemical reaction can be symbolically represented using a chemical equation, where reactants are shown on the left side and products are shown on the right side. The equation includes chemical formulas of the substances involved and indicates the balance of atoms before and after the reaction.
How do chemists use balanced equations?
Chemists use balanced equations to represent chemical reactions accurately by ensuring that the number of atoms of each element is equal on both sides of the equation. This helps in calculating the amounts of reactants needed and products formed, as well as understanding the stoichiometry of the reaction. Balanced equations are crucial for ensuring the conservation of mass and following the law of conservation of matter in chemical reactions.
What is the balanced chemical equation for CaCO3 to CaO plus CO2?
The balanced chemical equation for the decomposition of CaCO3 into CaO and CO2 is: CaCO3 -> CaO + CO2. This equation is already balanced as there is one atom of Ca, one of C, and three of O on both sides.
