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For the chemical compound which is represented in vinegar together with water: What is the name and formula of this compound?
I want to prepare copper sulphate using sulfuric acid. I have a sample of copper metal and a sample of copper carbonate. If I'm to use one of the materials which should it be and why
I need additional help for my final year in A level in chemistry to reach my target grade. Can any one tutor Sundays ?
You are to write an argumentative essay on Which Element do you think is the best/most useful one on the periodic table? Your reasons and claims should be supported by evidence. You cannot make a claim/ reason/ statement without proper evidence to support it. You will pick an element and compare and contrast it to 3 other elements. You will have to do research on your elements and counter elements, do determine your points and counter points. You also need to think of the negatives/ cons to each reason/ statement .. meaning the other point of view. You need to address the counter points/ other points of view, with evidence, and then explain why your element is better one. It is critical that when your paper is read, your element is support beyond a shadow of a doubt.
Animal cells, including those of humans, are eukaryotic cells. Explain the link between mitochondria in muscle cells and rough endoplasmic reticulum in enzyme secreting cells from salivary glands. The cells in tadpole tails are specialised and contain many more lysosomes compared to its other cells. Describe he production of lysosomes and suggest how this adaptation allows a tadople's tail to be absorbed as it changes into a frog. Animals tend to be multicellular organisms. Give the levels of organisation responsible for creating organisms.
Without using your spring scale, estimate the order of magnitude of the mass of your calculator in grams from what you judge to be its size, using the fact that the density of water is 1 g/cm3. Assume that the density of water is about the same as the density of your calculator. 1 g 102 g 104 g 106 g
Falling objects drop with an average acceleration of 9.8m/sec/sec. If an object falls from a tall building, how long will it take before it reaches a speed of 7m/s?
A roller coaster car with a mass of 250kg starts from a height of 100m above the ground just before rolling down the frictionless track. Find the speed of the car as it reaches the ground
A 100N girl rides a 50N bicycle a total of 150m at a constant speed. The frictional force against the forward motion of the bicycle equals 25N. How much work does the girl do? Explain your answer.