Solve the problem. 1.5 x 103 + 3.14 x 104 - 1.21 x 102 = ? %3D

Note: In the calculations below. consider all distances to be measured between the centers of the spheres. From a study of the right triangles involved in a cube, as illustrated below, where (a) is the edge length. (f) is the face diagonal, and (b) is the body diagonal, the following is apparent: b b²=f²+ a² f² = a² + a² b²=3a2 In calculating the volumes, not that only one-eighth of each of the corner spheres is inside the cube which has as its corners the centers of the spheres. The volume of a sphere may be calculated from its radius by using the formula: V = 4/3лг³ 1

Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume Calculations Stone 1 58.0 g 20.0 cm Stone 2 50.1 g 15.0 cm3 21/common/assets/pdfjs/1.0.0.30/web/viewer.ht...ndered-pdf&fullscreen=Dd21-fileviewer-rendered-pdf-dialog&height=746#0

Dashboard My Home OWLV2 | Online teaching and learning resource from Cengag [References) A student gently drops an object weighing 15.7 g into an open vessel that is full of ethanol, so that a volume of ethanol spills out equal to the volume of the object. The experimenter now finds that the vessel and its contents weigh 10.6 g more than the vessel full of ethanol only. The density of ethanol is 0.789 g/cm°. What is the density of the object? Density = g/cm³ Submit Answer Try Another Version 10 item attempts remaining

1) Report the results of this calculation along with both the percent relative and absolute uncertainties. 417.3 ± 0.4 × 71.8 ± 0.7(647.21 ± 0.2 − 182.3 ± 0.4) Absolute uncertainty:Percent uncertainty:

Betelgeuse (alpha Orionis) is the second-brightest star in the constellation Orion. It is 520.0 light-years from the sun.  How far is that distance in meters?

The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.

An atom of helium has a radius He = 31. pm and an average speed in the gas phase at 25°C of 787.m/s. Suppose the speed of a helium atom at 25°C has been measured to within 0.10%. Calculate the smallest possible length of box inside of which the atom could be known to be located with certainty. Write your answer as a multiple of I and round it to 2 significant figures. For example, if the smallest box the atom could be in turns He out to be 42.0 times the radius of an atom of helium, you would enter "42.1" as your answer. esc 0₁ F He Continue 55°F Clear ♫x F1 ! F2 2 F3 # 3 DII F4 x10 Q Search $ X 4 F5 % 5 53₂ F6 L A 6 F7 & © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibility P 7 F8 0 F9 DELL prt sc F10 home Submit Assignment F11 end F12 insert E pl + 18 Ar 12:23 5/23/20 delet

dimensional analysis The bromine content of the ocean is about 65 grams of bromine per million grams of sea water. How many cubic meters of ocean must be processed to recover 1.0 pounds of bromine if the density of sea water is 1.0 x 103 kg/m³?

The hydrogen ion concentration of a sample of each substance is given. Calculate the pH of the substance. (Round your answers to one decimal place.) (a) Oranges: [H+] = 2.5 × 10-4 M (b) Apples: [H*] = 1.3 × 10 M %D (c) Hominy (lye): [H*] = 3.9 × 10-13 Need Help? Read It Watch It DETAILS SPRECALC7 4.7.003.MI. 0/6 Submissions Used MY NOTES ASK YOUR TEAC The pH reading of a sample of each substance is given. Calculate the hydrogen ion concentration of the substance. (Give your answers in scientific notation, correct to one decimal place.) (a) Vinegar: pH = 3 [H+] = 10 M (b) Milk: pH 6.5 %D [H*] = 10 M Need Help? Read It Watch It Master It