Part A How many significant figures are in each number? 0.1 s O 4 2 3 6 7 The number of significant figues is ambiguous.

Q: A metal object of an irregular shape has a mass of 31.5 grams. When the metal is added t water in a…

A:

Q: A piece of metal with a mass of 13.2 g was droppedinto a graduated cylinder containing 17.00 mL of…

A: To calculate the density. Thus, it is expressed as shown in equation (1). Where, d = density, m =…

Q: Perform the calculation, rounding your answer to the proper number of significant figures. 0.120 g+…

A: During addition or subtraction, the answer should contain the same number of decimal places as the…

Q: 56. Round the number on the left to the number of significant figures indicated by the example in…

A: Significant figures of a number are those which are absolutely necessary to explain the numbers…

Q: A chemist adds 4 drops of hydrochloric acid to a beaker. What kind of number is "4" in this example?…

A: This is exact number. Because the number is obtained by counting. Each drop is countable. So, 4…

Q: A rectangular block has dimensions 2.90 cm x 3.50 cm x 10.0 cm. The mass of the block is 615.0 g.…

A:

Q: Express 53.8°C in units of Kelvin. Express your answer to two decimal places.

A: Unit conversion:  The unit of temperature degree can be converted into Kelvin by adding degree value…

Q: 2. A nurse measured the average heart beats of a patient and reported to the doctor in terms of time…

A: The time period of patient patient heart beats = 0.8 s  Number of heart beats formed in a minute = ?

Q: A piece of gold ingot has a mass of 257 g and a volume of 13.3 cm3. Calculate the density of gold in…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: A brick of metal has these dimensions: 8.47 in x 3.34 in x 4.14 in. It has mass 8.3 kg. What is the…

A: Given: Dimensions of brick = 8.47 in × 3.34 in × 4.14 in And mass of brick = 8.3 Kg = 8300 g…

Q: Give the number of significant figures for 3.8 m. Express your answer as an integer.

A: Significant figures are the number that is used to denote the meaningful digits with respect to…

Q: A wooden block has a volume of 18.5 in3. Express the volume of the cube in cm3.a) 303 cm3b) 47.0…

A: Given   The volume of wooden block is 18.5 in3.

Q: The density of an object is 0.072 g/mL. Calculate the mass of this object (g) if it displaces 150.0…

A: Given: The density of an object = 0.072 g/mL The volume of water displaced by the object = 150.0 mL…

Q: Part A N2 (g) + 3H2(g) 2NH3(g) Express your answer to two significant figures.

A: Part A The formula to calculate standard Gibbs free energy is as follows: ΔGrxn0=∑nΔGf…

Q: Round each answer to the correct number of significant figures. 9 +2.8 - 0.135+10.8=22.265 My…

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

Q: 0.00050 L How many significant digits are there in this number? Select one: O a. а. 1 O b. 2 Ос. 3 O…

A: The significant figures of a given number are those significant or important digits, which convey…

Q: The appropriate number of significant figures in the result of 15.234 x 15.208 is Select one: a. 5…

A: 1) the result of 15.234×15.208

Q: Can you help me understand what a significant figure is and help me with this problem?  46.97  How…

A: The digits which carry meaning supporting to its measurement resolution is called as significant…

Q: 25 cm. What is the density of the rectangular copper block? O 11.1 g/cm3 O 28.4 g/cm3 O 29.0 g/cm3 O…

A: Applying formula d= m/V

Q: Round the answer to the correct number of significant figures. (27.52÷3.29) + 5.7=14.065

A: Introduction: significant figures in a reported value is the number of digits that are known with…

Q: For the image attached Make a graph of the average mass vs year. Please label y and x axes

A: The graph to be plotted is Average Mass Versus Year.  Hence we have to take "Average Mass" on…

Q: A can of soda weighs 344 grams and it contains 95 grams of sugar. Calculate the percentage of sugar…

A: Answer: Given data: Mass of sugar Msugar=95g Mass of can of soda M=344g

Q: How close does the lightning have to strike for you to hear it 2.5 s after it strikes? Round to two…

A: Light travels faster than sound. So it hits before sound. We can easily calculate the distance of…

Q: 16. How many significant figures should the answer have if we multiply: 5.60 x 3.2 O 2 O 3 1

A: The given equation is, 5.60 × 3.2 = 17.92 The number of significant figures is 4.

Q: The density of copper metal is 8.92 g/cm3. A cube of copper has a mass of 30.00 kilograms. Calculate…

A: Given : Mass of cube = 30.00 Kg = 30000 g…

Q: 2.8 x 4.5039 =? what is the result of the operation expressed in significant numbers? A) 12.6 B)…

A: Given  2.8 x 4.5039 = ?

Q: A metal sphere weighing 5.55 g is added to 15.50 mL water in a graduated cylinder. The water lovel…

A: In the given question we have to calculate the density of metal, we know that, density = mass (g) /…

Q: A copper wire is 48.79 cm long and weighs 1.147 g. The density of copper is 8.933 g/cm3. What is the…

A: First using given density and mass, the volume of the copper wire is calculated.

Q: 8 - Which of the following numbers are not rounded correctly to 3 significant numbers ? a) 1.5587…

A: There are different numbers , that can be rounded to 3 significant Numbers as -  (1) 1.5587 =>…

Q: A chemist adds 825.0 mL of a 14.3 g/dL aluminum sulfite e (Al₂(SO3)₂) solution to a flask. Calculate…

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Q: Identify the number of significant figures in the numer 9.00 x 107

A:

Q: What is the density and identity of the metal? (see Table 3.1)

A: Mass of object = 8.37 g Volume occupied by metal = 3.10 mL Density = mass(g)/volume(mL)  = 8.37/3.10…

Q: Which choice best describes the degree of uncertainty in the measurement 16.30 g? O The uncertainty…

A: Given: measurement = 16.30 To calculate: Degree of uncertainty in the given measurement

Q: Part A How many significant figures are in each number? 0.1 s 4 1 3 6. 7 The number of significant…

A: All the zeros after decimal are not counted as significant figures if there is no non-zero number…

Q: A piece of metal with a mass of 13.2 g was dropped into a graduate cylinder containing 17.00 mL of…

A:

Q: 14.12 Round your answers to 6 decimal places. Box your final answers.

A: The chemical element is usually represented by the symbol XZA. Here X is the atomic symbol of the…

Q: How many significant figures does the number 48.050 have? A) 3 B) 4 C) 5 D) 2

A:

Q: ii) How many significant figures are present in number 05.105? a. 3 b. 4 c. 5 d. 6

A:

Q: What would be the correct reading, with the correct estimated digit, when using a ruler that has…

A: Significant figures are the number of digits in a value that contribute to the degree of accuracy of…

Q: use each diagram to report a measurement to the proper number of signifigant figures

A: Given :b) 100 mL graduated cylinder c) 10 mL graduated cylinder

Q: A penny has a mass of 2.50 g and the Moon has a mass of 7.35 ×10 kg. Use this information to answer…

A: From given Mass of one penny= 2.50g Mass of moon = 7.35×1022 kg Now we want to calculate mass of one…

Q: A sample of gaseous neon atoms at atmospheric pressure and 0 degrees C contains 2.69*10^22 atoms per…

A:

Q: Directions: Please answer the following questions to the best of your ability. 1. Round the…

A: Since your question has multiple parts and multiple subparts, we will solve first three subparts of…

Q: Part A Express the quantity 689.6 × 10¬12 s in each unit. ms Express your answer using four…

A: Given :-        Time  = 689.6 × 10-12 s  To convert :- the above value in ms and ns

Q: The proton has a radius of approximately 1.0x10^-13 cm and a mass of 1.7x10^-24 g. Determine the…

A: The ratio of the mass of a substance to the volume of the substance is defined as density. It is…

Q: An object will sink in a liquid if the density of the object is greater than that of the liquid. The…

A: Given, Mass of sphere = 9.83 g Density = 13.6 g/cm3   The volume can be calculated as :

Q: K3PO4 (all numbers are subscripts)

A:

Q: What is the length of the nail reported to the correct number of significant figures? Centimeters…

A: Given, The length from the end to last tip of nail falls between length 0 to 4.5 cm of scale.

Q: Which number has 5 significant digits? O 234.6 O 0.013245 0.0001 O 1.202

A: Option B is correct.

Q: Round each number as directed: a. 429.894 – tenth's place c. 14300. – hundred's place b. 344321 –…

A: Rounding off the given digits: a) Rounding off 429.894 to tenth's place = 429.9 Here we have rounded…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.