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# Chemistry

Travis Dach

Lvl 10
2021-10-26 18:33:41
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Cards in this guide (25)
How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen

Four (4) moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen.

The subscripts of a compound indicate

the ratio of elements

Sodium will react with oxygen to form sodium oxide Use the formula below to determine how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction

62 grams a+

A gas held at 798 mmHg in a 400 mL flask is released into a 3 L flask What will be the new gas pressure

106.4 mmHg

The ideal gas law measures pressure in

atmospheres A+

Omar was recording his preliminary data before beginning an experiment on gas behavior The room temperature was 298K and atmospheric pressure was 1 ATM Omar used an acceptable abbreviation of thes

STP

Which of these answers best defines climax

the turning point of the story at which the most action occurs

Choose the correct formula for finding percent of yield

(practical yield/theoretical yield) x 100

Sophie was asked to distinguish gases from solids and liquids Which of the following answers would be most correct

Gases are the least dense, have the greatest particle energy, and have no specific shape.

This term indicates that a problem is asking how much of a product will be made by a reaction

theoretical yeild.

A gas held in a 25.3 mL container is heated from 25 C to 37 C What is the final volume of the gas

26.3 mL

How many grams of water will be needed to produce 1.5 moles of acetylene gas

54 grams

(:

What term is defined as the number of moles of solute divided by the number of liters of solution

Molarity, abbrev. M, units: mol/L, mmol/ml

A compound is found be 36.5 percent Na 25.3 percent S and 38.0 percent O What is its empirical formula

Na2SO3, Sodium Sulfite.

The elements in an imaginary compound exist in the mole ratio of 1 3 1 for elements XY What will the empirical formula for the compound be

X4y3

Which of the following factors does NOT affect the behavior of a gas in a closed container
• The average kinetic energy.
Convert this temperature to the Kelvin scale 0ô C

1

A compound formed of 0.059 mol hydrogen and 0.94 mol oxygen has a molecular mass of 34.0 gmole What is the molecular formula of this compound

h2o2

The formula for sugar is C12H22011 how many moles of carbon are in 2 moles of sugar

If there are 2 moles of sugar. and 12 atoms of carbon per sugar molecule then there will be 24 moles of carbon atoms.

What type of conflict is illustrated by this scenario A man questions his religious teachings and seeks the meaning of life

individual vs. the universe

Copper will react with silver nitrate to form copper nitrate and silver From this reaction 127.1 grams of copper will produce how many grams of silver

431.5 grams

How many moles of sodium oxide will be produced when 10 moles of sodium react with oxygen 4Na OËÃ æ 2NaËÃO

4Na+O2 2Na2O

How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen 2Mg OËÃ æ 2MgO

2Mg + O2 --> 2MgO

4 moles as this reaction is one to one here.

A compound found to contain 75.7 arsenic and 24.3 oxygen would have which of the empirical formulas below

As2O3

Choose the best definition of STP

a term that indicates a combined measurement of standard atmospheric pressure and room temperature. A+

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