The density of aluminium is 2.7 g/cm3. Find the mass in grams of a bar of aluminum measuring 3.0 cm by 1.7 cm by 12.1 cm.

Q: A student measures the mass of a piece of aluminum, and finds it to be 8.945 g. She finds that the…

A:

Q: A sample is found to contain 8.47×10-6 g of salt. Express this quantity in nanograms.

A: Given that Mass of sample (salt) = 8.47 × 10-6 g Mass of sample  = ? ng

Q: Gold has a density of 0.01932 kg/cm3. What is the mass (in kg) of a 92.5 cm3 sample of gold?

A:

Q: A student is measuring a sample of sodium bicarbonate on an electronic balance that measures to the…

A: Introduction to electronic balance- An equipment used to measure material weight accurately is an…

Q: A perfect cube of a gold metal was found to have a mass of 45.85 g. The density of the gold is 19.3…

A: Given density = 19.3 g/cm3 mass = 45.85 g

Q: The average person's step covers 2.5 feet. Some health experts recommend getting 10,000 steps a day.…

A: First we need to calculate the distance covered in feet in 10,000 steps using the average step…

Q: In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass…

A:

Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: The density of gold is 19.3 g/cm3. Johan van der Smoot determines the mass of an irregularly shaped…

A:

Q: Aluminum has a density of 2.70 g/cm3. What is the mass of an aluminum cube with a length of 3.61 cm?…

A: Length, a = 3.61 cm Volume of cube is obtained from length – Volume = a3=3.61 cm3=47.046 cm3

Q: You add 5.8 g iron to 21.90 mL of water and observe that the volume of iron and water together is…

A: Mass of iron, m = 5.8 g  Initial volume of water, V1 = 21.90 mL  Final volume of water and iron…

Q: An atom of a particular element has a volume of 7.8 x 10-31 m3. What is this volume in cubic…

A: An atom is always neutral because of the equal number of electrons and protons. Electrons are…

Q: A rectangular block of copper alloy has a mass of 1896 g. The dimensions of the block are 8.4 cm by…

A:

Q: A chemist must dilute 73.5 mL of 3.19 M aqueous zinc nitrate (Zn . She'll do this by adding…

A: (Before dilution) Initial volume of aqueous zinc nitrate Zn(NO3)2 solution = V1 = 73.5 mL  (1mL =…

Q: Calculate the volume in cubic centimeters occupied by one molecule of water in a beaker of water.…

A: Given that:                    Density of water = 1.00 g/cm3 To find:                  Volume…

Q: aluminum has a density of 2.70g/cm3. what is the mass of a rectangle block of aluminum measuring…

A: The density of a substance is the ratio of its mass to volume. It is labelled in equation (1) in…

Q: Aluminum has a density of 2.70 g/cm3. What mass of Al would displace a volume of 10.25 mL?

A: Given that  density = 2.70 g/cm3  Volume = 10.25 mL mass = ? we know that 1 cm3 = 1 mL hence, Volume…

Q: A single water molecule has a mass of 2.99x10-23 g. Each molecule contains two hydrogen atoms that…

A: Given data, The mass of a single water molecule = 2.99 × 10-23 The percentage of two hydrogen atoms…

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: Density is calculated by using the formula : Density = Mass/Volume

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

A: The mass of flask of mercury  = 76pounds  1 Pounds = 453.92grams

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A hectacre (1.0000 x 104 m2) is a metric unit of area analogous to an acre. How many square feet are…

A: 1 feet consists of 0.3048 m and 1 square feet consists of 0.093 m2. 1 hectare consists of 10000 m2 5…

Q: In chemistry, angstrom (Å) is a commonly used unit, and 1 Å = 10-¹0 m. Another commonly used unit is…

A: Given,1 Å = 1010 m1 nm = 109 m

Q: Three experimental mass values of a certain object were obtained: 54.66 8, 54.67 8, and 54.668 If…

A:

Q: A homogeneous mixture was prepared by mixing 0.15 g A, 112.3 g B and the 24.55 g C.  The volume is…

A:

Q: a thin sheet of lead measures 15.5 cm by 23.0 cm and weighs 0.627 g. if the density of lead is 11.34…

A: Given information is as follows: Length of the lead sheet = 15.5 cm Width of the lead sheet = 23.0…

Q: A gold cube is 150.00 mm long, 10.00 cm wide, and 0.95 m thick. If gold has a density of 19.3g/cm^3,…

A: The density of any substance is defined as the ratio of its mass to the volume of the substance.

Q: A student is trying to identify the composition of a pure metal block by determining its density.…

A: Given that: Mass of block = 30.0 g Rectangular block = 2.00 cm × 3.00 cm × 1.40 cm Density of block…

Q: If the volume of a cube is 21.8 cm3, what is the volume in cubic feet? 54 cm = 1 in, 12 in = 1 ft

A: Given data : Volume of cube = 21.8 cm3 The formula for calculating the volume of cube is  V =…

Q: 1. A 25 mL flask is known to hold a total volume of 27.64 mL when completely filled. The empty flask…

A: Given ,Volume of falsk = 25 mLTotal volume it can hold = 27.64 mLMass of flask = 45.897 gMass of…

Q: You recently completed a lab on density.  Define density.  Suppose we have a solid object with a…

A: Density: The mass of unit volume is known as density. The density of gold is given by: density of…

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: We have to find the number of molecules of water in a given volume. The density of water is also…

Q: A sample of an unknown ore weighing 1.275 kg is found. When the sample is placed into a large…

A: Given that : Mass of the sample = 1.275 kg = 1275 g When the sample is placed into a large graduated…

Q: One carat is equivalent to a mass of 0.200 g. Use the fact that 1 kg (1000 g) has a weight of 2.205…

A: Given,  The weight of a diamond is 1414 carat.  The weight of a diamond in pounds is:

Q: The mass of a piece of metal is 28.3055 grams. When the piece of metal was dropped into a graduated…

A: Given information: Mass of metal piece = 28.3055 g Initial volume = 7.34 cm3 Final volume = 9.84 cm3

Q: a sample of iron ore has a density of 7.87 g/mL. if it measures 7.0 cm x 1.93 cm x 5.15 cm, what is…

A: The question is based on dimensional analysis. we have been given dimensions of iron and its…

Q: A chemist must dilute 22.0 mL of 45.9 µM aqueous magnesium fluoride (MgF₂) solution until the…

A:

Q: The volume of a sample of lead (density 11.3 g/cm) was determined to be 13.4 cm3. Calculate the mass…

A: Mass of the sample = volume x density                                 = 13.4 cm3 x 11.3 g/cm3…

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.