[ad_1]

Get college assignment help at uniessay writers a cube of gold covered metal with a volume of 64 cm3 has a mass of 980 g. the density of pure gold is 19.3 g/cm3 is the metal pure gold?

Arrange the elements in order of decreasing first ionization energy. Element

Arrange the elements in order of decreasing first ionization energy. Element Radius () element x 107 element y 198 element z 255

Chlorine gas can be prepared in the laboratory by the reaction

Chlorine gas can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. How much MnO2 should be reacted with excess HCl to obtain 275 mL of chlorine gas at 5.0°C and 650 mmHg? Equation: MnO2(s) 4HCl(aq) → MnCl2(aq) 2H2O(l) Cl2(g) a. 0.0103 g b. 0.837 g c. 0.896 g d. 249 g e. 681 g

Suppose your laboratory instructor inadvertendtly gave you a sample of KHP

Suppose your laboratory instructor inadvertendtly gave you a sample of KHP contaminated with NaCl to standardize your NaOH . how would thiss affect the molarity you calculated for you NaOH solution? Justify your answer

SbF4 shape

SbF4 shape

All i need is question 2 help with a and b.

All i need is question 2 help with a and b. if you can also do c that would be awesome.

Choose the reaction type that is most likely to occur if

Choose the reaction type that is most likely to occur if the two chemical species given in each question are mixed. Assume that all acids, bases, and salts are dissolved in water. H2SO4 and Ba(OH)2 : Oxidation reduction, combination reaction, displacement reaction, Metathesis (Neutralization or Precipitation) Fe and O2 : Oxidation reduction, displacement reaction, Metathesis (Neutralization or Precipitation) HBr and NaOH : Oxidation reduction, combination reaction, displacement reaction, Metathesis (Neutralization or Precipitation) PCl3 and Cl2: Oxidation reduction, combination reaction, displacement reaction, Metathesis (Neutralization or Precipitation)

It takes 55.0 J to raise the temperature of an 9.60

It takes 55.0 J to raise the temperature of an 9.60 g piece of unknown metal from 13.0 C to 24.6 C. What is the specific heat for the metal?

Microwave ovens use microwave radiation to heat food. The microwaves are

Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by moisture in the food, which is transferred to other components of the food. As the water becomes hotter, so does the food. Suppose that the microwave radiation has a wavelength of 11.2 . • How many photons are required to heat 200 of coffee from 21 to 62 ? =1.9×1028 photons • Suppose the microwave’s power is ( ). How long would you have to heat the coffee in part A?

A mixture of 6.0 mol of H2(g) and 3.0 mol of

A mixture of 6.0 mol of H2(g) and 3.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 27 C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.

how many grams of glucose are in 355 mL of 5.50%

Get college assignment help at uniessay writers how many grams of glucose are in 355 mL of 5.50% (m/v) glucose solution?

net ionic equation Al(OH)3(aq) 3HCl(aq) —-> AlCl3(aq) 3H2O

net ionic equation Al(OH)3(aq) 3HCl(aq) —-> AlCl3(aq) 3H2O

Say, for example, that you had prepared a Buffer, in which

Say, for example, that you had prepared a Buffer, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100 ml of 1.O M acetic acid. What would be the initial pH of Buffer C.

if 3.21 grams of BeC2O4 3H2O is heated to 200 degrees

if 3.21 grams of BeC2O4 3H2O is heated to 200 degrees celcius, what is the mass?

Choose all of the following that are true about the endpoint

Choose all of the following that are true about the endpoint of the titration. 4 the amount of analyte is half the amount of titrant added the solution will change to a clear solution for at least 30 seconds the amount of analyte equals the amount of titrant added the solution will change to faint pink for at least 30 seconds the solution will change to bright pink permanently the amount of analyte is twice the amount of titrant added

write a balanced equation for sodium oleate and HCL.

write a balanced equation for sodium oleate and HCL.

solution is prepared by dissolving 17.0 g ammonium sulfate in enough

solution is prepared by dissolving 17.0 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock solution is added to 58.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.

The densities of a given solid and liquid of molar mass

The densities of a given solid and liquid of molar mass 147.2 g/mol at its normal melting temperature 372.54 K are 992.6 and 933.4 kg/m^3, respectively. If the pressure is increased to 120 bar, the melting temperature increases to 275.88K. Calculate delta H of fusion and delta S of fusion for this substance. Answer should be 33.5 J/kmol and 12.5 x 10 ^3 J/mol

A balloon was filled to a volume of 2.50 rm L

A balloon was filled to a volume of 2.50 rm L when the temperature was rm 30.0^{circ}C. What would the volume become if the temperature dropped to rm 11.0^{circ}C.

ethanol, an ingredient of alcoholic drinks, can be made industrially via

ethanol, an ingredient of alcoholic drinks, can be made industrially via the reaction of ethylene gas, with water at high temperatures. (a) write a balance equation for this reaction (b) how many grams of ethylene are needed to react with 0.133 mol of water? how many grams of ethanol will result? (c) how many grams of water are needed to react with 0.371 mol of ethylene? How many grams of ethyl alcohol will react/

is the formula for chemistry Na3So4 correct? the 3 and 4

is the formula for chemistry Na3So4 correct? the 3 and 4 are supposed to be subscripts

The post a cube of gold covered metal with a volume of 64 appeared first on uniessay writers.

[ad_2]

Source link