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The term “10% household bleach” for a disinfectant usually refers to what concentration of
sodium hypochorite
10% means that 100ml of base solution contains 10ml of active components.
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i)Cellular shapes and arrangements are specific characteristics you can use to identify bacteria.What are the different shapes found in bacteria?Give examples.
Most bacteria appear in variations of three major shapes when viewed under the light microscope: The rod (bacillus)The sphere (coccusThe spiral type (vibrio). Structure of bacteria has two aspects, arrangement...
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If Vinegar has pHof 3 and household ammonia pH of 11,then how many times different is the concentration?
Each unit on pH scale corresponds to 10 fold difference. There are 8 units between ammonia and vinegar (11-3=8) Thus, ammonia has 10^8 times fewer hydrogen ions. 10^8= 100000000 or...
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Describe what might be the result if water could freeze at a higher temperature. How might this effect chemical and biological systems that contain water?
Answer:Ordinarily, water freezes at a temperature of 00 Celsius (320 F), at this point the solute and solvents are at equilibrium. If water could freeze at a higher temperature,...
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1)which meiosis division does ploidy reduction occur ?give reason for the reduction .does ploidy reduction occur in mitosis?2)what is heterospory?briefy comment on its significance.give two examples?
Ploidy reduction occurs during the first meiosis division. In Anaphase I two duplicated sets of homologous chromosomes are transported to the opposite poles of the cell. Sister chromatides remain connected...
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3, Describe Pseudo-Stratified Columnar Epithelium, it's function and give examples.
4, Discuss the difference between Holocrine glands and Apocrine glands by giving examples for each of them?
3. Pseudostratified columnar epithelium is a type of epithelium that contains only one layer of cells on the basal membrane. However, as the nuclei are positioned at different levels resembling...
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Ecosystems have the ability to "self-regulate". Explain the concept of self-regulation as it applies to ecosystems
The concept of self-regulation is a key aspect of ecosystem ecology. This concept explains why nutrients are cycled more efficiently and conserved to a greater extent in ecosystems in which...
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A household bleach has a concentration of 4.60% (m/v) of sodium hypochlorite, NaOCl (aq). What mass of sodium hypochlorite does a 2.84 L container of this bleach contain.
V = 2.84L - volume of container w = 4.60% - percent of salt mass is: m = V*w/100% m = 2.84*4.60% /100% = 0.13064 g
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What problems might you foresee if you tried to synthesize L-alanyl-L-valine directly from its two component amino acids? How might you solve this?
There is nothing to stop alanine coupling with itself, or valine coupling with itself to form L-alanyl-L-alanine and L-valyl-L-valine respectively. There is also no reason why any of the above dipetides...
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The pH of household ammonia is about 12.7, what is the hydronium ion concentration in this solution?
3.6693M
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