Find out the mass of substance

Assignment Help Chemistry
Reference no: EM1399534

An unknown mass of each of the given substances 1.Sand (tf=70.4 C),2.Pyrex glass(tf=67.6 C),3.water(tf=55.9 C) ,4.ethanol (tf=45.9 C), initially at 19.0 degrees Celsius, absorbs 1930 Joules of heat.  Find out the mass of each substance.

Reference no: EM1399534

Questions Cloud

Determine how many milligrams of water present : Determine how many milligrams of H 2 O are present in sample If the freezing point of  a 100.0g sample of 2-methyl-2-propanol =24.59C?
Find difference between and antigen and an antibody : Explain the difference between and antigen and an antibody. How do they relate to blood typing?
Explain how significant is it for companies such as nike : How significant is it for companies such as Nike as well as Wal-Mart that source extensively from foreign suppliers located in countries where wages are low as well as substandard working conditions are common to institute supplier codes of conduc..
Determine a hormone secreted by the hypothalamus : how might you determine a hormone secreted by the hypothalamus from one secreted by the anterior pituitary by looking at the name.
Find out the mass of substance : An unknown mass of each of the given substances 1.Sand (tf=70.4 C),2.Pyrex glass(tf=67.6 C),3.water(tf=55.9 C) ,4.ethanol (tf=45.9 C), initially at 19.0 degrees Celsius, absorbs 1930 Joules of heat.  Find out the mass of each substance.
Evaluate the second partner advice not to move downtown : We have spent so much on our present office that we can't afford to waste this money by moving now." Evaluate the second partner's advice not to move downtown. Illustrate and fully explain using an example of relevant cost.
Explain the issue of risk identification : Based on the Specific Bulk pack articles Warning- a Batman Cape Won't Help you fly and Risk Under the Big Top, write an Thesis of 375-400 words Total on the Key Points and several of the main supporting points on the issue of Risk Identification
Information regarding geometric distribution : What is the characteristic function of N? What is the mean and variance of N? What is the pmf of N? What is the probability that N is an even number?
Why rubens work epitomizes baroque movement : Select one particular Rubens' painting to examine as basis for your response. Based on analysis, why do scholars think that Rubens' work epitomizes Baroque movement?

Reviews

Write a Review

Chemistry Questions & Answers

  Describe the major absorption bands in the ir spectrum

Describe the major absorption bands in the IR spectrum - indicate the bonds responsible for those peaks which prove you have synthesized isopentyl acetate and that it is an ester.

  Multiple choice questions in nuclear chemistry

Multiple choice questions in nuclear chemistry - which equation represents the balanced nuclear equation

  What is density of this mixture of gases

A mixture of CO2 and N2 gases has an experiment density of 21922 mol/m3 at T=225K and Pressure= 68.759 MPa and Z=1.67661. What is density of this mixture of gases in mol/m3 by Peng-Robinson equation of state? (Mole fraction of Co2= 10.56%)

  Physiological saline solution

Determine how many grams of sodium chloride are required to prepare 250. mL of this solution. (if given the density of the saline solution is 1.0 g/mL)?

  Calcultate what is the value of enthalpy

Calcultate what is the value of enthalpy H reaction If the temperature increased from 35.0  degree celsius to 76 degree celsius and the heat capacity of the calorimeter = 23.3kj/c ? (the molar mass of C2H5OH = 46.07g/mol. )

  Describe law of conservation of charge

Describe how this observation is consistent with the law of conservation of charge.

  Determine the trend in sizes of the ions

Determine the trend in sizes of the ions O 2- ,N 3- , F - and also explain why does the trend exist? Also describe which of the molecules contains polar covalent bonds but is NOT itself a polar molecule?

  How many grams of co2 were produced

Cd2 forms two complexes with C2H3O2, with the following formation constants:(a) Find K2 for the reaction, (b) You prepare 1.00 L of solution containing 0.110 mol CH3CO2Na and 4.00 × 10-4 mol Cd(ClO4)2. Compute the fraction of cadmium in the form ..

  Calculate the volume of metabolic water

Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?

  Calculate how many moles of sodium phosphate required

Calculate how many moles of sodium phosphate are needed to react completely with 4.6 mol of calcium nitrate( Ca(NO 3 ) 2 ) to form sodium nitrate  (NaNO 3 ) and calcium phosphate?

  Write a reaction for the formation of a peptide bond

Write a reaction for the formation of a peptide bond between alanine and serine. React the amino group of alanine with carboxyl group of serine. Remember that there are 2 products in this reaction.

  Determine what will be the new temperature of the gas

Calculate the volume of a balloon at the final temperature if this balloon at temperature of 279K and an initial volume of 2.3L is warmed to 406K.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd