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How do you convert 164 pounds to kilograms?

A kilogram can also be expressed through a mixture of kilogram and gram units, with 74.38 kilograms equal to 74 kilograms and 389.14 grams.\nA kilogram is a unit of weight in the metric system, which is commonly used throughout most of the world. There are 1,000 grams in 1 kilogram.

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What is the difference between a heterogeneous and a homogenous mixture?

A heterogeneous mixture is one in which the different components are not especially well mixed. Either the components are not uniform or they have localized regions with different properties. A classic example of a heterogeneous mixture is oil and water. Others include soup or pizza.\n\nA homogeneous mixture is one in which the components are uniformly and smoothly distributed throughout. Examples are air, blood and saturated sugar water.

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What is the difference between ethyl alcohol and isopropyl alcohol?

Isopropyl alcohol is highly combustible and the vapor is dense. Ethyl alcohol is volatile. People can ingest ethyl alcohol and it is part of the creation of alcoholic beverages, but it also has antiseptic properties. Isopropyl alcohol has a primary use as an antiseptic and it is a common ingredient in things like soap, hand sanitizer and other cleaners. Many heavy-duty cleaners, such as those in hospitals, contain isopropyl alcohol.

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How do trees in the taiga protect themselves from fire?

Most broad-leafed trees can sprout and grow again from undamaged tree trunks and roots. Coniferous trees have needle-like leaves, but they cannot resprout as broad-leafed trees. They do have cones high up in the canopy, which open when exposed to fire or heat. The cone drops its seeds on the ground, reproducing on and reseeding the forest floor. Animals that could not thrive previously in the taiga due to the scarcity of food feed on the newly growing plants.

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How do glaciers change the landscape?

As a glacier erodes away the valley, it often leaves the outlets of tributary valleys hanging hundreds of feet above their former inlets. With stream-containing valleys, this forms cascades and waterfalls. When a glacier travel over elevations, it leaves the approaching side smooth while the lee sides remain rough.\nAs the glacier erodes the ground, it also picks up the debris, carrying them both within and under the ice. This material gives the glacier even more abrasive power to cut through the landscape. However, as temperatures warm and the ice melts, the debris becomes deposits known as m..

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How do you test the purity of touluene using NMR?

Adjust the spectrometer\nStart by adjusting the NMR spectrometer according to the nucleus of the toluene, specifically the proton. This is done in order to obtain a specific spectrum that is associated with the chemical toluene. \nPlace the toluene in a glass tube\nSuspend the glass tube between two poles that emit strong magnetic waves. \nSpin the toluene \nRandomly spin the toluene in the glass. This levels up any variations within the magnetic field and offsets any flaws within the tube. An antenna coil, usually red in color, is used to relay radio frequency waves of appropriate energy to t..

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What are magnetic nanoparticles?

The three main types of magnetic nanoparticles are oxides, metallic and metallic with a shell. Ferrite is the most used of all the oxide magnetic nanoparticles. At a certain size, these particles undergo superparamagnetism, which means that there is no net magnetization.\nThe second type of magnetic nanoparticles are metallic; this type includes iron or cobalt nanoparticles. The third type of magnetic nanoparticles are metallic with a shell. For instance, there is a cobalt nanoparticle with a graphene shell. The graphene shell is made of carbons, protecting the reactive core. This not only inc..

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How long do plants live?

An annual plant species completes its life in one year or less, meaning that it germinates, or begins growing; produces vegetative growth such as leaves and stems; flowers; sets seed; and dies in one year. Examples of annual species include lettuce and marigolds.\nA biennial species completes its life cycle in two years, or seasons. During the first season, the plant is only vegetative, which means it has leaves and stems. During the second season, it produces flowers, sets seed and dies. Examples of biennial species are carrots and onions.\nA perennial species completes its life cycle over ma..

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How are storms created?

Hail storms form when strong updraft winds cycle precipitation up towards the top of a cloud, freezing and turning into hail along the way. Hail stones come in varying shapes and sizes, ranging from 0.2 inches to 0.75 inches. The largest hailstone ever recorded in the United States was 8 inches in diameter and weighed nearly 2 pounds, according to National Storm Damage Center.\nHailstorms usually come from thunderstorms due to the combination of sub-freezing temperatures and moist air in the clouds. The largest type of storm cell, a supercell, produces many hazardous weather conditions, includ..

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How many valence electrons does tellurium have?

Having six valence electrons, tellurium tends to hold on to its electrons rather tightly. Tellurium, like every other element, wants to fill its outermost energy level with electrons. In most cases, tellurium becomes an electron acceptor because taking two electrons from one atom is easier than giving six electrons to another.\nTellurium belongs to the oxygen family, also called the chalcogens. This element is shiny like a metal and can exist by itself in nature; however, tellurium is more often found combined with metals such as gold and copper. In industry, tellurium can be used in solar pan..

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