Balance Lab Worksheet Measurement * Measurement is an important skill used for data collection and data analysis. Careful attention to the accuracy and degree of uncertainty of each measuring device is necessary for proper data collection. Significant figures are used to record or report measurements accurately. * This laboratory activity will give you the opportunity to get more familiar with some of the basic measuring devices that are common in chemistry labs. You will use the measurements
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Question 1 1 out of 1.25 points Partial Credit Expand the following by showing the powers of 10 for each place value. 456 = 4 x 10[a] + 5 x 10[b] + 6 x 10[c] 87.045 = [d] x 101 + [e] x 100 + [f] x 10-1 + [g] x 10[h] + 5 x 10[i] 700 = [j] x 102 + 0 x 101 + 0 x 100 Specified Answer for: a 2 Specified Answer for: b 1 Specified Answer for: c 0 Specified Answer for: d 8 Specified Answer for: e 7 Specified Answer for: f 0 Specified Answer for: g 4 Specified
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1. How many significant figures are in the following a. 100000007 9 significant figures b. 0.000000010 2 significant figures c. 9.02000 3 significant figures d. 100000 1 significant figures 2. Multiply or divide the following and give the answer in significant figures a. 35.2 x .0071= 2.4992 =2.50 b 2000 divided by 3.33= 600.6006006 = 600 c 45.5 x 2.22 x 10= 1010.1 = 1000 3. Add or subtract the following place answer
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Question 1-CXC Past Paper Questions: 1989-2011 May 1989 (a) Find the exact value of (4⅘÷2⅔)- (1⅓) 2 (5 marks)(b) Write your answer to part (a) as a decimal correct to 2 significant figures. (2marks)(c) A sum of money is to be divided among A‚B‚ AND C in the ratio of 2:3:5. Thelargest share amounts to $1200.Calculate: (i) the total sum of money to be shared(ii) A’s share(iii) the percentage of the total amount that Breceives (5 marks) May 1990 Calculators‚ slide rules and mathematical tables
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GCE Examiners’ Report Edexcel GCE Physics (8540/9540) June 2003 Edexcel is one of the leading examining and awarding bodies in the UK and throughout the world. We provide a wide range of qualifications including academic‚ vocational‚ occupational and specific programmes for employers. Through a network of UK and overseas offices‚ Edexcel’s centres receive the support they need to help them deliver their education and training programmes to learners. For further information please
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calculate): ___2.2_______g Mass (g) Percent in Mixture* Iron filings 1.9 g 1.9/6.8*100= 28% Sand 1.9 g 1.9/6.8*100= 28% Table Salt 2.2 g 2.2/6.8*100= 32% Benzoic Acid 0.8 g 0.8/6.8*100= 12% *Follow rules of calculations with Significant Figures Calculate the Percent of each Substance (iron‚ sand‚ salt‚ benzoic acid) in the Mixture by dividing the mass of the substance by the mass of the solid mixture (from #1 above)‚ then multiplying by 100. That is‚ % Substance = (Mass of
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absolute deviation and percent deviation. After you’ve done on trial do at least three more trials in order to observe precision in each trial. Before going on make sure all calculations are in order and that you’ve correctly stated the number and its significant figures. Arrange your data on a table and talk amongst your group members any findings that you see fit or relevant to
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The influence that significant others have on an individual’s development. Thematic analysis. Abstract The aim of this qualitative study was to explore whether significant people in human’s life can influence an individual’s development. The assumption that early relationships with our main careers play central part in our later development derives from Bowlby’s attachment theory and his ideas of internal working model. Data for the study was collected through the use of semi-structured
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Q1 a. My opening message in the online tutor group was: Hi Guys‚ Having read all the posts in here it seems that I am in the minority in saying I love all that Google do. While I totally appreciate the slight negative opinions of others here in my personal opinion it all comes down to the fact that Google is actually a business and so has to make money. I appreciate that some of its dealings are a little ’shady’ but show me a Global corporation that doesn’t come across this way in
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