Answers created by Manish Bhardwaj
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How much heat does 32.0 g of water absorb when it is heated from 25.0 to 80.0 °C?

What allows the formation of a positive ion?

What is 0.507 atmospheres pressure in kilopascals?

The atomic number is the number of what?

Question #feeeb

What are the values of n and l for the last subshell of Na (Z=11) and B (Z=5)? What are their shapes?

Question #b9477

The volume of a gas is 0.400 L when the pressure is 2.00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2.0 L?

What are the 2 purine bases and the 2 pyrimidine bases?

How would you balance the complete combustion of acetylene by oxygen gas in a constantpressure calorimeter?

What is the name of the compound that contains one uranium atom and six fluorine atoms?

A helium balloon with an internal pressure of 1.00 atm and a volume of 4.50 L at 20.0°C is released. What volume will the balloon occupy at an altitude where the pressure is 0.600 atm and the temperature is 20.0° C?

What units can measure mass?

Question #0ebb5

How many total atoms are in .660 g of #P_2O_5#?

A 0.310 mol sample of xenon gas has a volume of 22.0 L at a pressure of 0.470 atm. What is the temperature of the gas in degrees Celsius?

How do bases usually taste?

What is the pH of a 0.0235 M #HCl# solution?

In what order do electrons fill orbitals within a sublevel?

In the reaction represented by the equation #2Al_2O_3 > 4Al + 3O_2#, what is the mole ratio of aluminum to oxygen?

How many moles of #Cl# are in 2.7 mol #CaCl_2#?

How do you divide #(4x^22x+6) div (2x3)#?

What is the empirical formula of a phosphoric acid that contains 0.3086 g of hydrogen, 3.161 g of phosphorus, and 6.531 g of oxygen?

An exothermic reaction releases 80.5 J of energy. How many calories of energy are released in the reaction?

What is the mass of 5.99 mole of carbon monoxide?

Question #04d42

What is the percent composition of a compound with the empirical formula #MgCl_2#?

The pressure of a gas is 1.34 atm at a temperature of 298 K. What will the pressure be if the temperature is increased to 512 K?

A hot air balloon has a volume of 500.0 L. At what temperature is the gas if there are 25 moles present at standard pressure?

How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen in the reaction #2Mg + O_2 > 2MgO#?

During what type of phase change does a substance release energy to its surroundings?

How do you convert a pressure of 1.75 atm to kPa and to mmHg?

Question #e9190

What is the atomic number for the tin?

Question #4badc

How many moles of #CaBr_2# are in 5.0 grams of #CaBr_2#?

Is a solution a homogeneous mixture or a heterogeneous mixture?

A gas has a volume of 3.3 L at 25°C and 1.3 atm; at what temperature would the gas occupy 2.5 L at 1 atm?

A solution consists of 200. g of a nonelectrolytic solute dissolved in 500. g of water. It freezes at 9.30°C. What is the molecular weight of the solute?

What are cycloalkanes used for?

What is the percent composition of CO2?

What is the molarity of a solution that contains 17 g of #NH_3# in .50 L of solution?

How many microliters are in 41.0 mL?

What periodic trends of reactivity occur with the alkali metals?

Question #544cf

How do you express 275 mmHg in atm. and Pascal?

How many ounces in 1/8 pounds?

How many grams of hydrogen are necessary to react completely with 50.0 g of nitrogen in the reaction #N_2+3H_2>2NH_3#?

If an element gains an electron, will it form a positive ion or a negative ion?

A bus traveled 150 miles on 10 gallons of gas. How many miles per gallon does the bus get?

What is the percentage composition of #Ba(NO_3)_2#?

How many moles of #(NH_4)_2SO_4# are present in 25.0 grams of #(NH_4)_2SO_4#?

How many moles are in 45.0 sample of #MgO#?

How many yards are in 3/4 of a mile?

Question #64eeb

Question #4f461

How many sigma and pi bonds are found in the following?

What mass of carbon dioxide is produced from the complete combustion of #8.50*10^3# #g# of methane?

Alicin contains 59.9 of carbon, 21.7 hydrogen, 24.4 g of oxygen, and sulfur. What the mass percent of sulfur in a 162 g sample of the compound?

What is the concentration of all ions present in .0200 mole of sodium phosphate in 10.0 mL of solution?

How does light (uv radiation) effect bacterial growth?

What is the total number of oxygen atoms on the lefthand side of #2Ca_2(PO_4)_2(s) + 4SiO_2(s) + 12C(s) > 4CaSiO_3(s) + P_4(s) + 12CO(g)#?

What is the formula for lead (IV) oxide?

3.45 g of an unknown gas at 55°C and 1.10 atm is stored in a 2.55L flask. What is the density of the gas?

What is the concentration of lead ions and sulfide ions in a saturated solution of lead sulfide (#PbS#) solution at 25°C?

C7H12 reacts with O2 to produce CO2 and H2O. Suppose 348 g of CO2 are produced
in this reaction. What mass of O2 reacted?

In the reaction #N_2 + 3O_2 > 2NO_3#, how many grams of #N_2# are required to produce 10 grams of #NO_3#?

What happens to an electron during an absorption process?

How do you write/draw a Lewis structure for #N#?

What is the energy of a photon that has a wavelength of 13.2 nm?

What is the molarity of 416.48 g #BaCl_2# dissolved in #2# #L# of water?

A car travels 165 miles in 5 hours. How many miles does it average per hour?

The atomic mass of carbon is 12.01, hydrogen is 1.01, and oxygen is 16.00. What is the molar mass of glucose #C_6H_12O_6#?

What is the xintercept of #y=4(x15)+4#?

How do you find the quotient of #(4x^2 – y^2) ÷ (2x – y)#?

How do you simplify #(x^4)^2/(x^3)^5#?

What is x if #4x+3/x9=5#?

How do you simplify #(2^2)^5#?

How can I balance this equation? ____ N2 + ____ H2 > ____ NH3

Question #32c46

Question #da2f7

Question #23843

If the atomic number of an element is 11 and the atomic mass is 24, how many electrons does it have?

How does chemical bonding relate to life?

What is the algebraic expression for the sum of a number and 14?

If the measures of the three angles of a triangle are x, 2x20, and 3x10, the what is this type of triangle?

How do you simplify #(8x^3 y^2 z^2) * (3x^2)/(y^3 z^4)#?

How do you evaluate the expression 3a  2b + b(6  2),for a=4,b=2?

How do you solve #52y=15#?

Question #5bc49

How do you simplify #(8  i)  (3+2i) + (4 + 6i)#?

How do you simplify #i(2+i)#?

How do you simplify #4ab^2  3ab^2#?

How do you simplify #25^(2/5) / 25^(2/5)#?

How do you simplify #9^(3/7)* 3^(1/7)#?

How do you simplify 7+7(6)?

How do you simplify #(7)^2(7)#?

How do you simplify #(5a^11b^7)/(2)#?

Why the total mass of reactants and of product not change in a chemical reaction?

How do you solve #log x – log 3 = 1#?

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