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What is the equation written in standard form of 2X - y - 8 equals 0?
The equation 2X - y - 8 = 0 can be rearranged into standard form as 2X - y = 8. In standard form, the variables are typically placed on the left side of the equation with the constant on the right, without any x or y terms on the same side as the constant.
What is the volume of a gas is reduced from 4 L to 0.5 L while the temperature is held constant. What does the pressure of the gas do?
The gas pressure increases by a factor of 8. The relevant equation is pV = nRT. Since nothing on the right side of this equation changes, the product on the left side must remain constant. The volume is stated to decrease by a factor of 4/0.5 or 8; therefore the pressure must increase by the same factor.
Can a chemical equation have different coefficients on either side of the equation?
yes. the goal of a balanced equation is to have the same amount of atoms of an element on both sides. Ex. if the product side have a total of 8 oxygen atoms than the reactant side should have a total of 8 oxygen atoms Ex. MgSO4 + 2 H20 --> Mg(OH)2 + H2SO4 1 Mg atom on both sides 1 S atom on both sides 4 H atoms on both sides 6 O atoms on both sides
When an isotope undergoes beta decay which of the following does NOT change?
During beta decay, the number of protons in the nucleus changes as a neutron is converted into a proton and an electron. However, the mass number (total number of protons and neutrons) of the isotope remains the same.
What is the coefficient for oxygen in the balanced equation of C5H12 plus O2 equals Co2 plus H2O?
The balanced equation is: C5H12 + 8O2 → 5CO2 + 6H2O. Therefore, the coefficient for oxygen in the balanced equation is 8.
