Sig figs example - Study guides, Class notes & Summaries

What is the height of a 6 m building in centimeters? - Answer-600 cm A balance is used to measure...? - Answer-mass A sample of bismuth has a mass of 7872 g and a volume of 1.64cm3. WHat is the density of bismuth? - Answer-4.80x10cubed g/cm cubed A measurement is said to have high accuracy if it ... - Answer-agrees closely with the accepted standard Number of sig figs in 0.? - Answer-3 (1.5560x 10 to the -6) x (7.9860x 10 to the 13th) Don't forget about sig figs. - Answer-1.246x1...

Physics Review Name: ______KEY_______________ 1. Match the following physics terms with their appropriate definition (some can be used more than once): a.Physics b. Scalar c. Vector __b__ quantities that are fully described by a magnitude alone. __b__ speed is an example of this type of quantity __a__ the science of studying the concept of matter and its motion, as well as space and time. __c__ quantities that are fully described by both a magnitude and direction. __c__ velocity is an exa...

SCIN 131 Week 1 quiz SCIN 131 Week 1 quiz Questions & Answers Graded A SCIN 131 Week 1 quiz Question 1 of 25 4.0 Points Which of the following is a law? A.The universe began as a cosmic explosion called the Big Bang. B.A stone dropped from an altitude of 450 m falls to the ground in 9.6 s. C.A body in motion stays in motion unless acted upon by force. D.The star closest to Earth is moving away from Earth at high speed. Question 2 of 25 4.0 Points T...

The lines observed in H-lamp are parts of Balmer Series. All these lines are due to a transition from various higher n value to a common n. What is this common lower n value for all these lines? - Answer- 2 The bright violet line of Hg lamp has a wavelength of 435.8 nm. What is the energy of the photon associated with this emission line? - Answer- 4.56*10^-19 J Given: In Atomic Spectra lab, a student obtained his best-fit line equation to be y = 0.29 x + 46.8 when he plotted his Vernier re...

Chapter one: statistics and the scientific method - Answer :) Population - Answer the complete set of individuals, objects, or scores that you are interested in studying sample - Answer a subset of the population variable - Answer any property or characteristic of some event, object, person, that may have different values at different times depending on the conditions Independent variable - Answer controlled by the researcher- it is manipulated dependent variable - Answer the outc...

PCl5 - Answer- All of the following molecules have all bonds being equivalent except: SF6 CH4 NH3 PCl5 lone pair to lone pair - Answer- Which of the following has the largest repulsion, assuming that all the angles between electron pairs are identical? -They are all the same because they all contain the same number of electrons -lone pair to lone pair - bonding to bonding pair -lone pair to bonding pair square planar - Answer- What is the molecular geometry of XeF4? none of ...

Rearrange the following equation to solve for P. (P+a)(V-b)=nRT - Answer- P=(nRT/V-b) -a What is the slope if B is plotted on y-axis and A is plotted on x-axis? 5A + 3B = 8 - Answer- -5/3 In an experiemnt, the best-fit-line equation between Absorbance (A, unitless) and concentration (c, mg/mL) is used to calculate the concentration of Fe. Based on the best-fit line equation given below, what is the concentration of Fe if the absorbance is 1.25? A = 851 c + 0.03 - Answer- 0.0014 ...

ECS 101 Final Exam With Complete Solutions 2023

Pearson Mark Scheme (Results) Summer 2022 Pearson Edexcel GCSE In Combined Science (1 SCO) Paper 2CH Mark Scheme (Results) Summer 2022 Pearson Edexcel GCSE In Combined Science (1SC0) Paper 2CH Edexcel and BTEC Qualifications Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. We provide a wide range of qualifications including academic, vocational, occupational and specific programmes for employers. For further information visit our qualificat...

Chapter 1—The Foundations of Chemistry MULTIPLE CHOICE 1. Which of the following statements is incorrect? a. A body in motion possesses kinetic energy because of its motion. b. An object possesses potential energy because of its position or composition. c. Nuclear energy is an important kind of potential energy. d. Chemical reactions and physical changes that release energy to their surroundings are endothermic. e. The Law of Conservation of Matter and Energy states that the combined ...