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- M Inbox ( x Precalc X A HOLID X Oluwa X Good ь Chemi X A fake X G spiral G the sar X X Micros X https://papers.xtremepape.rs/CAIE/IGCSE/Chemistry%20(0620)/0620_s05_qp_6.pdf The same mass of zinc was used each time. The volume of acid used was different each time. Use the syringe diagrams to record the volume of hydrogen produced each time in the table. Table of results volume of sulphuric acid/cm volume of syringe diagram hydrogen/cm3 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 15 10 20 30 40 50 60 70 80 20 10 20 30 40 50 60 70 80 25 10 20 30 40 50 60 70 80 30 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 35 40 10 20 30 40 50 60 70 80 ENG 23:09 O Type here to search 27°C US 21/04/2022STPKsYapxmOBQpqJ9sYHEQf udwLFoPO2ojmMGw/edit s Help Last edit was seconds ago B U A G O O- E E E E E E - E - E E 14.5 3 4 5 6 You are asked to perform an experiment to determine the density of square block below. In order to complete your calculations you will need to (AKS 1b, DOK1). Question options: 1. Use the electronic balance to determine the mass of the block. 2. Use water displacement to determine the volume of the block. bD 1. Use the electronic balance to determine mass. 2. Use ruler to measure the length, width, and height to determine volume. C= 1. Use a pipet to determine the mass of the block. 2. Use water displacement to determine to volume of the block. Pr Au 立Pavilion HP TrueVision HD 4 Texas Workfor Mc Homework X W. College Physic hnical App AN Careers J/eagleonline.hccs.edu/courses/188795/assignments/3601808 Avaliabie diler reD 4 dl 10.17 dim Constants | Periodic Table Compiete tne fourtn row. Express your answer using two significant figures. Complete the following table by calculating the missing entries and indicating whether the solution is acidic or basic. [H+] [OH]] pH pOH Acidic or basic? ΑΣφ 7.4x10-3 [H*] 3.3x10-10 M Submit Request Answer 8.25 5.73 DOL ADVANCEDA fo f2. ho 4+ Is 10 insert
- pcal Legisla x S Midterm Review Guide x S Unit 3 Legislative Branc x 9 Schoology S Chemistry: Section 4 |S x S Atomic Theory A kent.schoology.com/common-assessment-delivery/start/4847085469?action=Donresume&submissionld%-D495973856 Chemistry midterm A rectangular block of iron metal weighs 235.8g. The dimensions of the block are 8.4 cm by 5.5 cm by 0.46cm. From this data, what is the density of iron? (Hint: V = L* W* H, D=m/v) (You must show work for full credit) MATH Basic 7 8. 9 y 26 27 28 29 30 4 1 2 3 %24Am I right? Calculate the mass percentage of water in the hydrate. Show the calculations. Sample 1 : 60.87% Mass of hydrate : 0.46g Mas of water : 0.28g Mass percentage of water in the hydrate = 0.28g/0.46g x 100 = 60.87% Sample 1 2 3 Calculations for sample 1 Mass of aluminum dish 1.24g 1.26g 1.24g - Mass of aluminum dish + Epsom salt 1.70g 1.94g 1.80g - Epsom salt, original (hydrated) mass 0.46g 0.68g 0.56g 1.70g – 1.24g = 0.46g Mass of aluminum dish + Epsom salt after heating 1.42g 1.62g 1.61g Epsom salt, heated (dehydrated) mass 0.18g 0.36g 0.37g 1.42g- 1.24g = 0.18g Mass of water 0.28g 0.32g 0.19g 0.46g – 0.18g = 0.28g Moles of magnesium sulfate 0.0015mol 0.0030mol 0.0031mol 0.18g x (1mol/120.37g)= 0.0015mol Moles of water 0.016mol 0.018mol 0.011mol 0.28g x (1mol/18.02g) = 0.016mol Ratio of moles water: moles of magnesium sulfate 32:3 18:3 11:3.1…esc Calculate the mass, in grams, of a single platinum atom (mpt = 195.08 amu). Express your answer using four significant figures. View Available Hint(s) lock VD] ΑΣΦ Provide Feedback Submit ! 1 0 F1 Q C A 1242 @ 2 F2 W S #3 ? 80 F3 g E Z X D $ 4 t 2 Q F4 R 67 5⁰ % 5 F ON F5 T
- tributi X Normal Distributi X ample Work rmat Tools Extensions Help locument/d/1KWoB0hrXolu7UEKbq4f8LBMHfpjHBRVU3qUzVI7K80U/edit Saved to Drive Normal text I 2022-2023 Mr. R X - I ▼ | Calibri 1 16 11. Which quantity is used to define 1 atomic mass unit? 3 100 Copy of Chern B x I UA 4 5 hp 4/27 - Unit 5.mp4 X particles. 12. How many molecules are there in 2 g of water (H₂O)? HINT: Molar mass of water is 18 g/mol Pathway: mass → moles → molecules E Did You Know? The word mole represents a specific number of objects, 6.022 × 10²¹ , just as the word dozen represents a specific number of objects, 12. The molar mass is the mass of a substance that contains 6.022 × 10²¹ DC Normal DE VE E 127 64°F MosOWLV2 | Assign x * MindTap - Cen X MindTap - Cen X G amu of ca - Go X b My Questions /ui/evo/index.html?elSBN=9781337790840&id3D299783426&snapshotld%=785765& + x GAGE MINDTAP 8: Chemical Composition Ę AA e. strontium chloride Answer + 31. Calculate the number of moles of the indicated substance present in each of the following samples. a. 21.4 mg of nitrogen dioxide b. 1.56 g of copper(II) nitrate c. 2.47 g of carbon disulfide d. 5.04 g of aluminum sulfate e. 2.99 g of lead(II) chloride f. 62.4 g of calcium carbonate 32. Calculate the number of moles of the indicated substance present in each of the following samples. a. 47.2 g of aluminum oxide 53 F insert pua F12 prt sc home F10 F11 F7 F4 F5A Classwork for Georgia History Ms X A USATestprep, LLC - Online State- x b My Questions | bartleby New Tab + A usatestprep.com/modules/questions/qq.php?testid=1741&assignment_id=43595796&strand=8692&element=73432&totalQuestions=10&c. S N: 1Q 1 2 3 4 5 7 8 9 10 Save Submit reactant - product If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction? es 4) A) O grams B) 2 grams C) 4 grams D) 8 grams Law of Conservation of Matter (SPS3.a) Conservation Of Mass In Chemical Reactions Regular Calc Scientific Hint Calc Formulas ID: 9708 USA PREP FAX 1-877-816-0808 Read Our Blog © USATestprep, LLC 2021, All Rights Reserved. PHONE 1-877-377-9537 Meet Our Teachers 11:17 AM P Type here to search a 3/17/2021
- 8 of 2 I Review | Constants | Periodic T Part A Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 2.60 um?. Convert this to square meters. 2. Express the area in square meters to three significant figures. • View Available Hint(s) ΑΣφ 2.60 µm? Submit P Pearson on Inc. All rights reserved. I Terms of Use | Privacy Policy I Permissions Contact Us 4:39 PM 25% 1/31/2020Question 4. Dylan reacted a sample of silver chloride, A9CI, to recover pure silver. He recorded the following data. Mass of empty beaker = 29.10 g Mass of beaker with AgCl = 39.74 g Mass of silver recovered = 8.00 g Data %3D Assuming that all the silver was recovered in the process, what mass of chlorine would have been combined with 1.00 g of silver? А. 0.33 g В. 1.33 g С. 2.64 g D. 3.97 g00 4- > gage Learning ndex.html?elSBN=9781305657571&id%3D14041518248snapshotld=2790159& Physics 1403 Chemical Equation.. Q POLS 2306 Flashcar... SN Periodic table McNair Teams cengage Pt Periodic Table Pta... G Google MINDTAP Q Search this cou tional Extra Credit) Use the References to access important values if needed for this question. The compound cyclohexanol, C6H120, is a good fuel. It is a liquid at ordinary temperatures. When the liquid is burned, the reaction involved is 2 C6H120(t) + 17 02(g)→12 CO2(g) + 12 H20(g) The standard enthalpy of formation of liquid cyclohexanol at 25 °C is -348.2 kJ mol-1; other relevant enthalpy of formatton values in kJ mol1 are: C6H120(g) = -286.2 ; CO2(g) = -393.5 ; H20(g) = -241.8 (a) Calculate the enthalpy change in the burning of 3.000 mol liquid cyclohexanol to form gaseous products at 25°C. State explicitly whether the reaction is endothermic or exothermic. = oHV (b) Would more or less heat be evolved if gaseous cyclohexanol were burned…