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a) The vacuum in the headspace of a can of food is normally formed by "hot fill" exhausting - that is, the cans are closed when the can is filled with product at a temperature of 85°C. However, a batch is inadvertently closed with the product temperature only 50°C. What will be the vacuum (negative gauge pressure) in these cans when they cool to room temperature (25°C)?
b) The gauge on a gas storage cylinder, containing 200 kg of gas, indicates a pressure of 1 MPa at 20°C. How may kilograms of gas remain if the pressure gauge shows 600 kPa when the temperature is 30°C?
Where we have strong bond:ch20 ,h20,n20 and why?
Requisites of refractory material or essential requirements of good refractory: a. It should be able to withstand high temperature. The appropriate refractory is chose
#question.Q1 What is wrong with each of the following attempts to write an electron configuration? Justify your answer with suitable explanation. (a) 1s22s3 (b) 1s22s22p23s2 (c) 1s
typesofhardness
a) List various advantages and drawbacks of using transparent polymeric materials for eyeglass lenses. (b) Cite 4 properties (in addition to being transparent) that are important
Which one of the following statements is correct? You may wish to examine a molecular model of this compound. 1. Carbon G is an asymmetric center and its configuration is R 2
Explain polymerisation vinyl chloride and its applications. PVC and its applications - It is acquired from polymerisation of vinyl chloride in the presence of a catalyst as per
Ammonia is oxidized with air to form nitric oxide in the first step to produce nitric acid. The reaction occurs in a well insulated continuous reactor based on the stoichiometry:
complete process of reverberetoy furnace?
What are the different types of point defects (i) Vacancies (ii) Interstitialcies Compositional defect (iii) Substitutional impurity (iv) Electronic defects
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