If the sum of twice a number and -3 is multiplied by 4, the answer is 28. What is the number?

Q: When 33.911 is added to 82.649, the result should be reported with digit(s) after the decimal point.…

A: While subtraction or addition, the number of decimal places in the result are same as the…

Q: When rounding the number 2.348615 to 4 significant figures, what is the correct value?

A:

Q: 4.30 ft converted into centimeters would be?

A: 1 foot have 30.48 centimeters So, 4.30 foot have 131.064 So multiplied 4×30.48= 131.064 Answer is…

Q: What equals inches divided by inches, if we treat them like numbers o, why do you divide by the unit…

A: When we divide two same numbers or units, they cancel out to give 1.  When we multiply two same…

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

A: we need to convert from N/cm to N/mm

Q: How many significant figures are in the number 0.0062500?

A: The meaningful digits which are known with certainty plus one digit which is estimated or uncertain…

Q: What is the product of(4x10^2) and 185? Input your answer with the correct number of significant…

A: The numbers given are  1) 4 X 102  2) 185

Q: A car moving at an average speed of 55.0 mi/h for 4.25 h has traveled how far?

A: Given information, Average speed = 55.0 mi/h Time traveled = 4.25 h Calculate : Distance = ?

Q: When the calculation (2.31)(4.9795x10^3)(1.9971x10^4) is preformed, how many significant digits…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: Calculate (2.075 x 0.585)/(8.42 x 0.0045) Correct the answer by rounding off the number to the…

A: Significant Numbers are those numbers or digits in the given number which are used in mathematical…

Q: Bob and Jill are measuring the height of Mr. Chenet (Mr Chenet is 1.8593 meters tall). Bob gets a…

A: Accuracy It is defined as the closeness of measurement to specific value means we will have one…

Q: The numerical value for (5.6 x 104) ÷ (7.89 x 102) is equal to, with the proper number of…

A: Division of significant figures :- The answer of the division should have the same number of…

Q: The average annual rainfall on Mount Waialeale on Kauai, Hawaii is 460.1 inches What is this average…

A: The average annual rainfall on mount waialeale on kauai, Hawaii is 460.1 inches. We know one inch of…

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 17.8 umol of barium…

A: Given that : Micromoles of barium chloride (BaCl2) = 17.8 μmol The volume of solution = 150 mL

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

A:

Q: Convert the value 7.01x105 g to use unit prefixes.

A: The given unit of mass is 7.01×105 g.

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

A: Here we need the converion factor to convert μg/dl to g/ml

Q: 0.356=44.032.0x+88.046.0(0.220−x) This question is for chemistry. I'm not sure how to…

A: In this question, we have to solve the given equation to find the value of x.…

Q: If the temperature is -55 °F, what is the corresponding temperature on the Kelvin scale?

A:

Q: Which answer represents the measurement 0.00569 g rounded to two significant figures?

A: Rules to rounding significant figures :- 1) " If the rightmost digit to be removed is  >5 then…

Q: What is the difference between an exact number and an inexact number? Give an example of each type…

A: The arithmetic numbers can be categorized into two categories: exact and inexact numbers. These…

Q: The conversion factor used to convert 55.6 km to miles is _____

A:

Q: What is the meaning of the number of digits reported in a measured quantity?

A:

Q: In the winter, a heated home in the Northeast might be maintained at a temperature of 63 °F. What is…

A: Given  Temperature  = 63 °F  Temperature in Celsius and Kelvin = ?

Q: How many significant figures are in the number 9.80 x 104?

A: Significant figures: The number that makes it easy to read or write in simple form is called…

Q: Can you show me the process of how I would know the number of centimeter in one feet, from the…

A: The number of centimeters in 1 feet is, 1 ft = 30.48 cm

Q: Super fine 40-gauge copper wire has a diameter of only 0.080 mm and wei wire is pulled off to wind a…

A: Given: Diameter of the gauge is 0.080mm The weight of the gauge is 705.g The weight was reduce due…

Q: how many micrometers are in 1.00 kilometers?

A: It is required to calculate how many micrometers (µm) are there in 1 km.

Q: If light travels exactly 1 meter in 1/299,772,458 of a second, how many kilometers does it travel in…

A: The metre is the length of path travelled by lightin vacuum during a time interval of…

Q: When the calculation (0.005215)(0.08212)(273.2)/ (4.1) is performed, the answer should be reported…

A: Rules of multiplication and division of Significant figures : In multiplication and division…

Q: Convert 2.60 ft (cubed) to cubic centimeters. Although 1 foot is 12 inches, 1 square foot is not 12…

A: It is required to convert 2.60 ft3 to cm3 and the relation between 1 ft2 and in2 is to be…

Q: How many significant figures are in the number 0.0204600? Express this number in scientific…

A: Zeroes before 2 are not countable but after 6 are countable. So it has 6 significant figures.

Q: The density of a solid is (7.40x10^0) g/mL. What is this density in units of cg/L?  Hint: Break…

A: We know that 1g/ml =100000cg/L or 105 So 7.40×100 g/ml = 7.40×105cg/ml

Q: The distance from Miami to Orlando is 235.0 mi. What is the distance in micrometers?

A: Given  Distance between  city  235 .0 mi

Q: write the equality and conversions factors for the relationship between miles and hours for a car…

A: Dear student, you have not mentioned the units in which conversion from miles/h is required. But…

Q: If I wanted to convert 34.5 meters in to km which of the following conversions factors would I need?

A:

Q: 2. The number of significant figures in the number 2101.010100 is

A: 2101.010100 To find out the significant figures of given value.

Q: True or false: The “size” of a degree on the Celsius scale is thesame as the “size” of a degree on…

A: The temperature scales of Fahrenheit, Celsius and Kelvin are developed based on freezing and boiling…

Q: The radius of a copper (Cu) atom is roughly 1.3 × 10−10 m. How many times can you divide evenly a…

A: The radius is given as, 1.3 x 10-10 m. The diameter will be 2.6 x 10-10 m. Length of copper piece =…

Q: How many pm are there in  4.60x10 m? Enter the appropriate exponent as a number and not a word.

A:

Q: (24.2)(0.0025)(6.023•10^4)= Determine the number of significant digits that would be in the answer…

A: Significant figures are used to show  the degree of accuracy of any given answer. The rules for…

Q: How many significant figures are in the number 1360?

A: Given number is, 1360

Q: Perform the calculation and record the answer with the correct number of significant figures.…

A: Solution Appropriate range of serious knowledge is vital so as to possess a significant level of…

Q: Express the following numbers as decimals:(a) 1.52 × 10−2 , (b) 7.78 × 10−8 , (c) 1 × 10−6, (d)…

A: Given numbers   Numbers Part(a) 1.52×10-2 Part(b) 7.78×10-8 Part(c) 1×10-6 Part(d)…

Q: One liter ( abbreviated L) is the volume of a box that is 1dm on each side. How long is the side of…

A: 10 dm= 1m⇒ 1 dm= 110m =0.1 m

Q: 3. Determine the volume (in mL) of l.0 teaspoon. 1 tablespoon = 3 teaspoons; 1 tablespoon = ½fluid…

A:

Q: (3.0045)(0.003468)(11.07)/(12.3-6.5) Determine the number of significant digits that would be in the…

A: The numerator part consists of five significant figures (3.0045), four significant figures in…

Q: If light travels exactly 1 meter in 1/299,772,458 of a second, how many kilometers does it travel in…

A:

Q: if a substance has a mass of 33.3 g per 991 mL then its density is?

A: Given: The mass (M) of the substance is 33.3 g The volume (V) of the substance is 991 mL

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.