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Express the answers to the following calculations in scientific notation:(a) $0.0095+\left(8.5 \times 10^{-3}\right)$(b) $653 \div\left(5.75 \times 10^{-8}\right)$(c) $850,000-\left(9.0 \times 10^{5}\right)$(d) $\left(3.6 \times 10^{-4}\right) \times\left(3.6 \times 10^{6}\right)$

a) $1.8 \cdot 10^{-2}$b) $1.14 \cdot 10^{10}$c) $-5.0 \cdot 10^{4}$d) $1.3 \cdot 10^{3}$

Chemistry 101

Chapter 1

Chemistry: The Study of Change

Intro to Chemistry

Carleton College

University of Maryland - University College

University of Kentucky

University of Toronto

Lectures

02:29

Chemistry is the science of matter, especially its chemical reactions, but also its composition, structure and properties. Chemistry deals with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds. Chemistry also involves understanding the properties and interactions of individual atoms and molecules for use in larger-scale applications.

04:42

In chemistry and physics, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, "matter" generally includes atoms and anything made up of them, and any particles and objects that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or sound. Matter exists in various states (known as phases) that are defined by various physical properties, such as state of matter, phase, shape, and density. The Standard Model of particle physics and the general theory of relativity describe fundamental particles and the fundamental forces acting between them that control the structure and dynamics of matter.

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Express the answers to the…

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Perform the following calc…

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Do the following calculati…

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Convert the following numb…

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Solve each problem, and ex…

02:21

it was first calculation. Let's rewrite each of them in decimal form. So we know that the last significant figures in the fourth decimal place. So when we add these two together will still have the last significant figure eight figure in the fourth decimal place, which is a zero. So we need to include that zero when we write it in scientific notation 1.80 times 10 to the negative, too. Then when we carry out this calculation, we've got three significant figures up top three significant figures down below. So we'll round 23 significant figures 11.4 times 10 to the 10. I'm sorry of the decimal in the wrong spot, 1.14 times 10 to the 10 then for the next one will do its attraction. Let's write them both in normal notation. So we see the last significant figure is in the 10 thousands physician. So when we subtracted to the last significant figure still in the 10,000 position, so we end up with negative 50,000 four negative five times 10 to the four for the last one. We've got two significant figures. Two significant figures were doing multiplication so well rounded. Two significant figures. 1300 and scientific notation 1.3 times 10 to the third.

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