9. Iron has an atomic number of 26 and has an electronic configuration 18² 28² 2p 38² 3p 48² 3d. How many d electrons are present in Fe²+? 2 4

Q: .what is the corre conversion 0.968 mg ImL7

A: So we’ve given to convert 0.968 g/cm3 to mg/ml.

Q: Question 4 4. The average distance from Earth to the Sun is 150,000 kilometers. What is that…

A: Note : The correct answer is first option only, It might be given wrong in the portal,  option…

Q: A student sets up the following equation to convert a measurement (The ? stands for a number the…

A: In this type of question we will identify the relationship between the units which we need to do…

Q: Which piece of laboratory equipment can make the most precise measurements? Top-loading balance (in…

A: In chemistry laboratory we always prefer an instrument which is having more no. Of measuring units .

Q: Convert 6.4 x 10^-28 j-s/ kg to erg- min /lb. Note that “j” means “ joule” - it is one of the units…

A: 6.4*10-28 j-s/Kg to erg-min/lb Conversion required : 1 J = 107 ergs 60 sec = 1 min => 1 sec =…

Q: Which of the following is the formula for percent error? %error = %error = experimental-accepted…

A: The percentage error is the ratio of difference between experimental and accepted value to that of…

Q: Show, using dimensional analysis, how many nickels you should receive in exchange for 95 quarters.

A:

Q: Which of the following are SI units of force and volume, respectively? O g-cm?/s, mL O kg-m/s, L O…

A: SI is the international system of units. It is a scientific method of expressing the magnitudes of…

Q: A human hair is 75 um across. How many inches is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( )…

A:

Q: 1. Are the zeros in these numbers significant? Write yes or no. (а) 503 (b) 0.007 (c) 4200 (d)…

A:

Q: The number of people present at an outdoor rock concert was estimated by police to be 40,000. What…

A: a)  10,000 If the uncertainty is 10,000, then the low and high value will be as follows: Low…

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: Accurate measurement :- A measurement is said to be accurate if it is very close to the actual…

Q: To do the following conversion. Convert: 53.8 Fahrenheit Round answers to the nearest hundredth, if…

A: • We need to convert 53.8 °C into _____°F

Q: Convert the following measurement. 4.9 x 10 5 g cm $ 2 2 2 kg-m 2

A: Given that,Convert into .

Q: Perform the calculation, and report the answer to the correct number of significant figures.

A: Perform the calculation, and report the answer to the correct number of significant figures.

Q: Which one of the following is an intensive property? Group of answer choices amount of substance…

A: Answer:- Intensive property is the property whose value does not depend on the amount of the matter…

Q: Least count of the balance 0.1 g   1 21.0 24.0   Mass of solid, reading 1 25 g   2 19.0 21.0   Mass…

A: Concept: Density = Mass/ Volume To complete the table using the given experimental data

Q: CONVERT 5.32 x 10 TO THE -6 POWER s to MICROSECONDS.use METRIC syste

A: We are given : Time (t) = 5.32×10-6s

Q: A cooking recipe lists adding 3.0 qt of water as a step. How many mL of water is this?

A: qt stands for quart. One quart (qt ) is exactly equals to quarter (1/4)  gallons . So, quarter…

Q: LO-1 1. Calcium carbonate, a white solid with a density of 2.71 g/mL, reacts with hydrochloric acid…

A:

Q: Convert 48 miles per hour into m s. ms!

A: 1 mile = 1609.344 metres  1 hour = 60 minutes  1 minute = 60 seconds

Q: I want to know if there is a chart to go by to know how to convert metric systems and SI units for…

A:

Q: IotatioT, 1.74 Express the following measurements in scientific notation: (b) 0.000 042 1 mL (a)…

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Q: e) 248 cm to millimeters

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Q: What is tbe weight  in Newton of a 225 gram package of breakfast cereal

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Q: Write the correct answer (significant figures) for the following calculation  2.45 * (57.01-…

A:

Q: Which of the following is NOT an official SI base unit?    Group of answer choices   Kelvin Meter…

A: To choose which is not an official SI base unit

Q: Convert 34.0 mm to inches

A:

Q: Solve: ) -5) 6.00 x 10 x (8.00 x 10 8.00 x 10 x (681)

A: Mathematical tools are the tools which can simplify the complex equations and calculations. Simple…

Q: 105. Suppose your car is rated at 45 mi/gal for highway use and 38 mi/gal for city driving. If you…

A: for highway 45 mi/ gal  1 mile = 1.60934 km 1 gal = 3.78541 litre  1mile /gal = 1.60934km /…

Q: conversion convert 130 feet per second to miles per hour (round to whole m.p.h.)

A: Convert 130 feet per second to miles per hour (round to whole m.p.h.)

Q: 3.6 *10^4 mg to kg

A: Given that : We have to convert 3.6 x 104 mg to kg.

Q: A new beeswax candle has a volume of 475 cubic centimeters. Given that the density of beeswax is…

A: Given,  Volume of beeswax candle : 475 cm3 Density of beeswax : 0.970 g/cm3  Mass = ? ( in Grams)

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.