Answer:
Hands-free eyewash stations, sand bucket, fire blankets, fire extinguishers, fire alarm system and first aid kit.
Explanation:
Working in laboratories has many risks, therefore, preventive measures that should be incorporated to avoid the occurrence of any laboratory accidents.
Some of the important emergency equipment that should be available in laboratories are: hands-free eyewash stations, sand bucket, fire blankets, fire extinguishers, fire alarm system, chemical storage cabinet, first aid kits and fume hood.
Some of the personal protective equipment include lab coats, goggles, safety gloves and face shield.
Answer:
newton's 3 laws state:
- an object in motion stays in motion (unless an external force acts on it)
- every action has an opposite but equal reaction
- force= mass x acceleration
A food web is graphical representation of what eats what in an ecological community and is formed by the natural interconnection of food chains.
Freshwater mussel are important components of food webs. They are omnivores and they feed upon algae, zooplanktons, bacteria and dissolved organic matter.
- If a virus wiped out the mussel population, the consumer (seagull, octopus, human) may not starve or die as they have other sources of food available. The other food sources available for human is fish, shark and octopus, for seagull is fish and for octopus is limpets. However as the consumer have lost a source of food, the competition for other food sources will increase. Competition occurs in a food web as individuals of different species struggle to obtain the same food.
- The two other consumer of mussels are-human and octopus.
- The population of consumers may not change drastically as other food sources are available.
Learn more about food web-
brainly.com/question/18816028
Answer:
(i) Calculate the average rate of consumption of A in the first 15 seconds of reaction: -8.67X10^(-3) M/s
(ii) Calculate the average rate of production of C in the first 15 seconds of reaction: 0.0.17 M/s
(iii) Calculate the average rate of consumption of A in the last 15 seconds of the reaction: -3x10^(-3) M/s
(iv) Explain the difference between the rates of consumption calculated in (i) and that in (iii): At the beginning the reaction, is fast, then, when time passes, the reaction slows because there are less concentration of the reactants to produce C, so the rate is less.
Explanation:
The general formula to calculate any reaction rate is:
![r=\frac{\Delta [Concentration]}{\Delta t}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B%5CDelta%20%5BConcentration%5D%7D%7B%5CDelta%20t%7D)
With this formula we can make the calculations, and we can know if r is positive or negative by knowing if we are calculating for a reactant or a product, positive for products, negative for reactants.
(i)
![r=\frac{0.52-0.65}{15}=-8.67x10^{-3} M/s](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B0.52-0.65%7D%7B15%7D%3D-8.67x10%5E%7B-3%7D%20M%2Fs)
(ii)
In this case we need to multiply delta by 2, because 1 mole of A produces 2 moles of C:
![r=2*\frac{0.52-0.65}{15}=-0.017M/s](https://tex.z-dn.net/?f=r%3D2%2A%5Cfrac%7B0.52-0.65%7D%7B15%7D%3D-0.017M%2Fs)
As we know it is a product, r needs to be positive, so we change the sign of the result and we have: 0.017 M/s
(iii)
![r=\frac{0.095-0.14}{15}=-3x10^{-3} M/s](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B0.095-0.14%7D%7B15%7D%3D-3x10%5E%7B-3%7D%20M%2Fs)
(iv)
Is already answered in the upper part.