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What is SmartWork chemistry?

SmartWork chemistry follows Norton's third edition of "Chemistry: The Science in Context," published in January 2011. The entire course is an introduction to general chemistry concepts such as matter, atoms, molecules, chemical bonding, molecular geometry, electricity, biochemistry and nuclear chemistry.\nSmartWork allows teachers to customize tutorials and questions based upon the text book. Students can access assignments online, on mobile devices and on tablet computers. Quizzes and assignments give students and teachers instant feedback to assess how to move forward with an individual..

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What does it mean to have low MPV on a hemogram lab test?

According to Lab Tests Online, lower MPV test results indicate the presence of a condition causing the bone marrow to produce fewer blood platelets. It is important for doctors to get an accurate measure of MPV so they can better diagnose any existing problem. Platelet counts reveal valuable information about the health of bone marrow and may point doctors in the right direction to discover what diseases may be causing a reduction of platelet volume.\nThrombocytopenia is a condition that is directly linked to low MPV. Some of the common symptoms of this condition are bleeding mouth, nosebleeds..

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How does the way water changes from one state to another compare to the way other substances change?

The large amounts of energy required to change the state of water apply to both melting ice and boiling water. As with other pure substances, during a state change pure water does not change temperature, with all added or lost heat energy being taken up or released by the change of state. However, the amount of energy involved in these processes is unusual. Further, changing the temperature of water at all involves an unusual amount of energy, meaning that water has a high specific heat. The specific heat of a substance is the amount of energy it takes to make a given mass of the substance ris..

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Why is biasing needed in a transistor amplifier circuit?

From a baseline, any changes in voltages in a circuit are recorded as differences from the proper operating bias. Circuit elements like resistors affect the bias of a transistor amplifier. In an experiment described on the University of Saint Andrews website, a constructed transistor amplifier is recorded at an initial bias. Then, applied input voltage makes its way through the circuit and results in output at a given voltage based on selected resistors.

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What are the reactants and products of photosynthesis?

Photosynthesis occurs in most plant life but may differ in some. Algae and related organic life perform a differentiated process which leads to similar results: the breakdown of carbon dioxide and the production of oxygen. It is a relatively simple process at its core.Absorbing lightThe first part of the process of photosynthesis occurs when energy from radiant light is absorbed into proteins where chlorophyll is contained inside chloroplasts. These proteins occur in large numbers in most plants. They begin to break down this energy into a form usable by the plant.Repurposing the energyWater ..

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Which bones form the knee joint?

The knee bones are connected by tendons to the leg muscles, which move the joint. Ligaments help make the knee more stable. Between the tibia and femur are the medial and lateral menisci, two C-shaped pieces of protective cartilage. These help absorb shock between the two bones. The knee also contains numerous fluid-filled sacs, called bursae, which help provide smooth movement of the knee.

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What is the formula that indicates that volume equals mass divided by density?

The International System of Units (SI) unit used for density is kilogram per cubic meter. The densities of common substances are known constants. Thus, looking for either the mass or the volume is easy by simply using the formula above. Density can be observed when a helium balloon escapes and floats through the air. This happens because the air around the balloon is more dense than helium.

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Why is graphite a good conductor of electricity?

Because graphite is such a great conductor, it is used in electrical cells. It is also found in motor oil and pencils. Because graphite is soft, it is combined with clay, and baked, and hardened before being inserted into wood for pencils.\nGraphite is made up of bonded carbon atoms. One carbon atom is strongly bonded to three other carbon atoms, resulting in carbon sheets. Each carbon atom is then bound weakly to two other carbon atoms, one to the sheet above it and another to the sheet below it. The strong bonds give graphite high boiling and melting points, while the weak bonds make graphit..

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What is potassium dihydrogen phosphate?

Potassium dihydrogen phosphate is produced from the chemical reaction of phosphoric acid with potassium carbonate. It has a range of industrial uses. It's used as a food additive, a fungicide and also as a fertilizer. It is also classified as a hazardous substance, as it produces toxic gases in fires and causes redness and pain when it comes into contact with the skin and eyes. The substance also causes abdominal pain and digestive problems when ingested.

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What are examples of alloys and their uses?

Bronze is considered the earliest alloy to be used by humans and was probably discovered when copper and tin accidentally melted together and hardened. Bronze can also be created with other metals, such as lead. It can be made into works of art, furniture, armour and weapons. It is used in construction and ship-building.\nBrass is an alloy of copper and zinc. It's used to make musical instruments, coins, works of art and household fixtures such as doorknobs and faucets. There are several different types of brass.\nPewter is an alloy of tin and another metal, such as antimony, silver, lead..

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