0
45 grams H20 x (1 mole H20/18 grams H2O) x (6.02E23 molecules H20/1 mole H2O)
the grams H2O and moles H2O cancel out. When you punch it into your calculator, the answer comes out to:
=1.505E24 molecules H2O
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A beaker contains 421ml. of water The density of the water is 1.00gml. what is the volume of the water in liters?
The density of water in this problem is just extra info that is NOT needed to answer the problem. Since one liter contains 1000 mL and you have only 421 mL , you have .421 L. The math behind this is 421 mL x 1 liter/1000mL = .421L
Is zirconium a good conductor of heat and electricity?
Zr is classified as a transitional metal, with 2 electrons in the outermost shell. So yes, Zr should conduct electricity. But how conductive? Its resistivity is 4.2E-5 ohm-cm at room temperature, compared with aluminum of 2.8e-6 ohm-cm; iron, 9.6e-6 ohm-cm; lead, 2.1e-5 ohm-cm. So Zr is half as conductive as Pb and 23% as conductive as iron.
Capillary sample?
DefinitionA capillary sample is a blood sample collected by pricking the skin. Capillaries are tiny blood vessels near the surface of the skin.Alternative NamesBlood sample - capillary; Fingerstick; HeelstickHow the test is performedSome blood tests are performed on blood obtained by pricking the skin of the finger, heel, or other areas and collecting a drop (or a few drops) of blood on a test strip or into a small container.The area is cleansed with antiseptic and pricked with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. Cotton or a bandage may be applied to the puncture site if there is any continued bleeding.How the test will feelSome people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.Why the test is performedBlood transports oxygen, food, waste products, and other materials within the body. It also helps regulate body temperature. Blood is made up of a fluid called plasma and cells. Plasma contains various dissolved substances. The cellular portion consists primarily of red blood cells, but also includes white blood cells and platelets.Because blood has multiple functions, tests on the blood or its components can provide valuable clues in the diagnosis of a multitude of medical conditions.Capillary blood sampling offers several advantages:It is relatively easy to obtain (it can be difficult to obtain blood from the veins, especially in infants).There are several collection sites on the body (heel, fingertips, etc.) and these can be rotated.Testing can be performed at home and with minimal training. For example, diabetics must check their blood sugar several times a day using capillary blood sampling.There are some disadvantages to capillary blood sampling.Only a limited amount of blood can be obtained using this method.There are some risks associated with the procedure (see below).Capillary blood sampling may provide inaccurate results, such as falsely elevated sugar, electrolyte, and blood count values.Normal ValuesSee the specific test.What abnormal results meanResults vary depending on the test performed.What the risks areExcessive bleedingFainting or feeling light-headedInfection (a slight risk any time the skin is broken)Scarring (occurs when there have been multiple punctures in the same area)Calcified nodules (sometimes occurs in infants, but usually disappear by 30 months of age)Damage to blood cells from this method of collection can sometimes cause inaccurate test results (and the need to repeat the test with blood drawn from a vein)Special considerationsCapillary blood sampling is very useful when very small amounts of blood are needed or when blood is very difficult to obtain, such as in infants. Many times, however, when a larger sample is needed, the blood must be obtained from a vein.ReferencesBabar T, Skugor M. Endocrinology. In: Carey WD, ed. Cleveland Clinic: Current Clinical Medicine 2010. 2nd ed. Philadelphia, Pa: Saunders Elsevier; 2010:section 4.Lewandrowski K. Point-of-care testing: an overview and a look to the future. Clin Lab Med. 2009 Sep;29(3):421-32.Hayrapetian-Dorsi L. Genetics. In: Custer JW, Rau RE, eds. Johns Hopkins: The Harriet Lane Handbook. 18th ed. Philadelphia, Pa: Elsevier Mosby; 2009:chap 13.Reviewed ByReview Date: 05/01/2011Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
How many kilograms are there in 421 grams?
0.421 kg
A beaker contains 421ml. of water The density of the water is 1.00gml. what is the volume of the water in liters?
The density of water in this problem is just extra info that is NOT needed to answer the problem. Since one liter contains 1000 mL and you have only 421 mL , you have .421 L. The math behind this is 421 mL x 1 liter/1000mL = .421L
Chromium iii oxide reacts with hydrogen sulfide h2s gas to form chromium iii sulfide and water how many grams of cr2o3 are required to produce 421 g of cr2s3?
7
9 kg 421 g to kilograms?
This measurement is already present in the question in kilograms and grams. There are 1000 grams in one kilogram, therefore 421 / 1000 = 0.421 kilograms. Add 9 to this, and you get 9.421 kilograms.
How many liters are 421 milliliters?
421 milliliters is 0.42 liters.
What times what equals 421?
There are infinitely many possible answers.Let A be any number such that 0 < A
How many times does 58 go to 421?
421 ÷ 58 = 7.26 or 7 with a remainder of 15.
How many teeth set do dolphins have?
they have 421
How many blocks are there in west Bengal?
421
How many feet are in 421 meters?
421 feet = about 128 meters. Direct Conversion Formula 421 ft* 0.3048 m 1 ft = 128.3208 m
What are the factors of 421?
The positive integer factors of 421 are: 1, 421
What are the prime factors of 421?
The only prime factor of 421 is 421.
