YOU WERE LOOKING FOR: Express Your Answer As An Integer Chemistry
It is the student's responsibility to check and confirm before uploading, as we will assume that anything you upload to our site is clear of any such violations. Remember — good teaching often requires preparation, and online tutoring is no...
All users of our service will get a price quote on any new request. After you have received your price quote, you have the option of accepting the quote by authorizing payment. When you authorize a quote, your credit card or PayPal account will be...
Recognize exact and measured numbers Key Points An exact number has absolutely no uncertainty in it. Exact numbers cannot be simplified and have an infinite number of significant figures. Measured numbers have a limited number of significant figures. Term Exact numbersThese numbers are either defined numbers or result of a count.
They have an infinite number of significant figures. Exact Numbers Exact numbers are either defined numbers or the result of a count. For example, a dozen is defined as 12 objects, and a pound is defined as 16 ounces. An exact number can only be expressed in one way and cannot be simplified any further. Exact numbers have an infinite number of significant figures, but they often appear as integers. Exact numbersThere are exactly two chairs in this picture. The number of chairs is counted, not measured, so we are completely certain how many chairs there are. Examples of exact numbers include: Conversions within the American system such as pounds to ounces, the number of feet in a mile, the number of inches in a foot, etc.
Conversions with the metric system such as kilograms to grams, the number of meters in a kilometer, the number of centimeters in a meter. The words per and percent mean exactly out of one or one hundred, respectively. Counted numbers are exact: there are two chairs in the photograph. There are fifteen books on the shelf.
Eighty-seven people attended the lecture. Measured Numbers In contrast, measured numbers always have a limited number of significant digits. A mass reported as 0. There is a degree of uncertainty any time you measure something. For example, the weight of a particular sample is 0. On the other hand, because exact numbers are not measured, they have no uncertainty and an infinite numbers of significant figures.
Measured numbersMass is an example of a measured number. When mass is reported as 0. Examples of measured numbers: The diameter of a coin, such as The weight of an object, such as 8. The length of a pen, such as 12 cm. Show Sources Boundless vets and curates high-quality, openly licensed content from around the Internet.
Which description correctly characterizes the acidity or basicity of a solution? March 1, Question Which description correctly characterizes the acidity or basicity of a solution? The higher the pH is, the more the hydroxide ion concentration decreases and the more acidic the solution becomes. The higher the pH is, the more the hydroxide ion concentration increases and the more basic the solution becomes. The lower the pH is, … Read more Iron reacts with oxygen in a chemical hand-warmer. March 1, Question Iron reacts with oxygen in a chemical hand-warmer. As an exothermic process because it releases heat as an endothermic process because it releases heat as an exothermic process because it absorbs heat as an endothermic process because it absorbs heat. Answer A: as an exothermic process because it … Read more A compound is February 24, Question A compound is What is its empirical formula? Insert subscripts as needed.
The molecular mass of the compound is amu. What is its molecular formula? Answer Divide the percent mass by the atomic mall of each element to have … Read more How many electrons in an atom could have these sets of quantum numbers? February 24, Question How many electrons in an atom could have these sets of quantum numbers? February 24, Question What is the value of K for this aqueous reaction at K? The specific heat of water is 4. Calculate the molar heat capacity of water. February 22, Question The specific heat of water is 4. Answer 1 We are given that the specific heat of water is 4. We know that the molar mass of water is Answer 1 A hydrocarbon with three or more consecutive cumulative double bonds is known as a cumulene.
They are analogous to allenes, only exhibiting a more elongated chain. The basic molecule in this category is butatriene, which is also simply known … Read more Complete the tables of value for four aqueous solutions at 25 Celsius February 4, Question Complete the tables of value for four aqueous solutions at 25 celsius. Answer 1 Expert Verified There are a total of four parameters you need to know to determine the pH of the solution. These ions … Read more How many lone pairs are on the central atom in bcl3? February 4, Question How many lone pairs are on the central atom in bcl3? Express your answer numerically as an integer? Answer There are no lone pairs on the central atom.
It is possible to give similar proofs that the other index laws also hold for negative integer and rational exponents. It allows the numbers to be easily recorded and read. The star Sirius is approximately 75 km from the sun. We can represent this number more compactly by moving the decimal point to just after the first non-zero digit and multiplying by an appropriate power of 10 to recover the original number. If we move the decimal point 13 places to the right, inserting the necessary zeroes, we arrive back at the number we started with. We can similarly deal with very small numbers using negative indices.
We place the decimal point just after the first non-zero digit and multiply by the appropriate power of ten. Thus, 0. Hence, for example, the diameter of a uranium atom is 0. The index laws may be used to perform operations on numbers written in scientific notation. Solution 3. In this case, we could leave this as the answer, or, if required, write is as 4. Significant figures in scientific notation Scientists and engineers routinely employ scientific notation to represent large and small numbers. Since all measurements are approximations anyway, they generally report the numbers rounded to a given number of significant figures. Thus, a number such as 2. This is the same as rounding the number 21 to 21 , that is, correct to three significant figures. A given number may be expressed with different numbers of significant figures. For example, 3. To round a number to a required number of significant figures, first write the number in scientific notation and identify the last significant digit required.
Then leave the digit alone if the next digit is 0, 1, 2 ,3 or 4 in this case the original number is rounded down and increase the last digit by one if the next digit is 5, 6, 7, 8 or 9 in this case the original number is rounded up. Solution A table of approximate values follows: x.
Express your answers as an integer. Express your answers as a chemical symbol. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Replace the quantum number that is not allowed with one that is allowed. Express your answer as an integer. Give your answer as word and number, for example: period5 or group3b Enter your answers in order given in the table from left to right separated by commas. Enter the simplest whole number ratio in order of hydrogen to oxygen, respectively. Express your answer as two integers, separated by a comma e. An atom of element X contains 48 protons and 66 neutrons.
Part A Identify the element, and write the symbol for the isotope in the standard format. Chemistry Chapter 2 Homework 66 Terms. Express your
Use of appropriate significant figures Use of appropriate significant figures While it is important to know how accurate a measurement is, it is also important to convey one's degree of confidence in the accuracy of a number when making an observation or carrying out a calculation. This can be accomplished by noting numerical observations or quoting results to the correct number of significant figures. All digits quoted are called significant figures "sig figs". Rules All non-zero digits are significant. For example: Zeros between non-zero digits are significant. For example: Zeros to the left of the first non-zero digit are not significant.
For example: 0. For example: 2. Answer: The ambiguity can be removed by using exponential notation. The weight can be expressed as Note: We cannot write These rules apply to measured quantities which are non-exact. If you are told that a number is exact then there is no uncertainty; i. Exact integers fall in this category. An important example of an exact quantity is the coefficient of a reagent in a chemical reaction. This number, called the stoichiometric coefficient, expresses the specific number of molecules of reagent A which undergo reaction with a specific number of molecules of reagent B. The stoichiometric coefficients are exact. For example: If an object has mass of For example:
For a new problem, you will need to begin a new live expert session. You can contact support with any questions regarding your current subscription. You will be able to enter math problems once our session is over. I am only able to help with one math problem per session. Which problem would you like to work on? Does that make sense? I am currently working on this problem. Are you still there? It appears we may have a connection issue. I will end the session - please reconnect if you still need assistance. Can you please send an image of the problem you are seeing in your book or homework?
If you click on "Tap to view steps Which step do you have a question on? Please make sure you are in the correct subject. To change subjects, please exit out of this live expert session and select the appropriate subject from the menu located in the upper left corner of the Mathway screen. What are you trying to do with this input? Not Supported While we cover a very wide range of problems, we are currently unable to assist with this specific problem. I spoke with my team and we will make note of this for future training. Is there a different problem you would like further assistance with? Mathway currently does not support this subject. We are more than happy to answer any math specific question you may have about this problem. Mathway currently does not support Ask an Expert Live in Chemistry. If this is what you were looking for, please contact support. Mathway currently only computes linear regressions. We are here to assist you with your math questions.
You will need to get assistance from your school if you are having problems entering the answers into your online assignment. You may speak with a member of our customer support team by calling End of Conversation.
Common wrong-answer feedback for chemical formula answers Updated: If a submission contains a template with an empty input field, give the unpenalized response: "There is an error in your submission. Make sure you have entered a value or symbol in each formatting box. If a submission would be correct except that text that should appear in a subscript instead appears as regular text, give the unpenalized response: "Use subscripts to represent the number of each type of atom or ion in a molecule. If a submission would be correct except for having an incorrect order of elements in one or more compounds, give the penalized response: "Check that you have the proper order for the element symbols in your answer.
If a superscript and subscripted number is detected prefixed to an element, but the two are not stacked, give the unpenalized response: "Check your placement of subscripts and superscripts. Place phases at the end of a chemical formula. Example: user submits when the correct answer is. If a student includes a coefficient of 1 on any atom, ion, molecule, particle, give the unpenalized response: "Coefficients of 1 are not allowed. To indicate a coefficient of 1, do not include a value. If a submission would be correct except that the wrong state markers were used on one or more compound, then give the penalized response "Check that you have properly identified all of the phases in your answer. If a submission contains unrecognized state markers that fall into one of the categories below, then give the unpenalized response "Check that you have properly formatted all of the phases in your answer.
Solution for Al Express your answer as an integer. Determine the number of valence electrons for each of the Determine the number of valence electrons for each of the following four elements Part A Al Express your answer as an integer. Part B Sn Express your answer as an integer. Elements with 3 or fewer valence electrons tend to lose electrons, and elements with 5 or more valence electrons tend to gain electrons. It is impossible to determine based on periodic trends alone. Express your answer as an integer. Check all that apply. The resistors are also known. Part A The rightmost mesh. The leftmost mesh. View Homework Oxidation questions Help.? Yahoo Answers What is the oxidation state of S in each ion? Express your answer as a signed integer. HSO3- 4. View Exam 1 Flashcards Quizlet Express your answer using two significant figures. Ti In TiO2 2. Cr In C Answer to use answer as an integer. Ti in TiO2 2. N in GaN 4. Al in NaAlH4 5. C in CH3OH methanol 6. AI … Answer to Al Express your answer as an integer.
View Answered: Al Express your answer as an integer. So, you have 4 H's, thus four -1 charges. View Chem , Post-Lecture Ch. Part B Part complete Al Express your answer as an integer. Part C Part complete Be Express your answer as an integer. Part D Part complete Se Express your answer as an integer. View chemistry - how to express your answer in integer form Express your answer as an integer answer part b how. View How do you express your answer as an integer? RE: chemistry - how to express your answer in integer form?
The conversion is fairly simple. Write in scientific notation. This is not a very large number, but it will work nicely for an example. To convert this to scientific notation, I first convert the "" to "1. This is not the same number as what they gave me, but 1. Then, in scientific notation, is written as 1. Actually, converting between "regular" notation and scientific notation is even simpler than I just showed, because all you really need to do is count decimal places.
To do the conversion for the previous example, I'd count the number of decimal places I'd moved the decimal point. Since I'd moved it two places, then I'd be dealing with a power of 2 on But should it be a positive or a negative power of 2? Since the original number was bigger than the converted form 1. Write in decimal notation: 3. Since the exponent on 10 is "12", I'll need to move the decimal point twelve places over. First, I'll move the decimal point twelve places over. I make little loops when I count off the places, to keep track: Then I fill in the cheemistry with zeroes: In other words, the number is 3,,, or 3.
Affiliate Write 0. In scientific notation, the number part as opposed to the ten-to-a-power part will be "4. So I will count how many places the decimal point has to move to get from where it is now expess where it needs to be: Then the power on 10 has to be — "eleven", because that's how many places the decimal point needs to be moved, and "negative", because I'm dealing with a SMALL number. So, in scientific notation, the number is written as 4. Since the exponent on 10 is negative, I am looking for a small yiur. Since the exponent is a seven, I will be moving the decimal point seven places. Since I need to move the point to get a small number, I'll be moving it to the left. The answer is 0. This is a chemisty number, so the exponent on 10 will be negative. The first "interesting" digit in this number is the 5, so that's where the decimal point will need to go. To get from where it is to right after the 5, the decimal point will need to move nine places to the right.
Count 'em integerr, if you're not sure! Then the power on 10 will be a negative 9, and the answer is 5. This is a large number, so the exponent on 10 will be positive. The first "interesting" digit in this number is the leading 9, so that's where the decimal express your answer as an integer chemistry will need to go.
To get from where it is to right anewer the 9, the decimal point will need to move seven places to the left. Then the power on 10 will be a positive 7, and the answer is 9. If you have a small number in decimal form smaller than 1, in absolute valuethen the power is negative for the scientific notation; if it's a large number in decimal bigger than 1, in absolute valuethen the exponent is positive for the scientific notation.
Multiply by 10, , Worksheets to help you practice multiplying by powers of ten Divide by 10, , Worksheets to help you practice dividing by powers of ten King Kong Scientific Notation Game Escape King Kong by correctly answering these scientific. B : Matrices The purpose of these problems is not merely to get the right answer, but to practice writing out the dimensional analysis setup. Astronomers rely on scientific notation in order to Answer Key: 1 Length of a year. Writing a Number in Scientific Notation To write a number less than 1 in scientific notation, move the decimal point right and use a negative exponent. Answer all non-integer questions to at least 3 significant figures. Our free TEAS practice tests updated in will help you prepare for your upcoming exam so you can get into your chosen nursing program! Cambridge Key English Test Extra 1. Exponents and Scientific Notation: Problem 3 from Unit 2, Lesson 6 Find a sequence of rotations, reections, translations, and dilations showing that one gure is similar to the other.
No comments:
Post a Comment