Acid H2X gives two H* ions. A 2.30 g sample of H2X reacts completely with 55.0 mL of 0.600 M NaOH solution. What is the molar mass of H2X?

Q: When you perform the following operations, how many significant figurės should your answer have?…

A:

Q: Calculate the density of a metal that has a mass of 34.90 g. The volume of the metal was determined…

A: Given : mass of metal = 34.90 gm  Initial volume of water = 24.46 ml  Final volume of water  plus…

Q: 1. A 50.00 g sample of a solid is placed into a graduated cylinder and then the cylinder is filled…

A: Given, mass of a sample of solid = 50.00 g            volume of cylinder filled = 100.00 mL…

Q: Fill in the blanks. Standard Numbers 0.0350 6,700 Scientific notation 3.500 x 10² 4.6 x 10-3

A: Steps to convert a number from general format to scientific notation :  Move the decimal point so…

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: Convert 7.5 * 1023 cm to mm.

A: The given expression is as follows: =7.5×1023 =7.5102×102×102 =7959060 cm

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: 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: Mass of water = 43.922 g Volume of water = 44.8 mL what is the density of water (g/mL)

A: Given, Mass of water = 43.922 g Volume of water = 44.8 mL Density of water = ? g/mL

Q: 3. Iron has a density of 7.87 g/cm3. If a 63.7 gram sample is added to 85.6 mL of water in a…

A: Mass= 63.7gm Density=7.87g/cm3  Volume= mass/density Volume= 63.7÷7.87=8.09ml Initial volume=85.6ml…

Q: 334.54 grams + 198 grams

A: The addition can be done as: 334.54+198.00 =532.54 g The value of 198 is written as 198.00, that is…

Q: convert 336.75 m/s^2 to miles per hour

A: 1 m/s2  = 2.237 miles/hour

Q: The density of lithium metal is 535 kg/m3 . What is this density in g/cm3?a) 0.000535 g/cm3b) 0.535…

A: 1 kilogram=1000 grams 1 meter=100 centimeter

Q: What is the density of a block of metal that measures 62.88cm by 34.220cm by 5.18cm and has a mass…

A: Given is, block of metal that measures 62.88cm by 34.220cm by 5.18cm  Mass= 24,983.44 grams

Q: föllówing data was collected from a solution that was prepared to allow a sample of plastic to…

A: The mass v/s density data curve given is,

Q: The density of silver is 10.5 g/mL and that of gold is 19.3 g/ml. What volume of gold (in mL) has…

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

Q: A full truckload of garbage has a mass of 26370 pounds. What is this mass in kilograms?

A: we have to covert the value of mass from pounds to kilograms

Q: The average density of blood is 1.060 kg/L. The average human body contains 5.00 L of blood. What is…

A: average density of blood = 1.060 kg/Laverage volume of blood = 5.00 Laverage mass of blood = ?

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: The specific gravity of iron is 7.87 in the density of water at 4.00°C is 1.00 g/cm^3. You can use…

A: Specific gravity=(density of substance) ÷ (density of water @4° C) Given : density of water @ 4°C is…

Q: The weight of a rock is measured to be 0.072 lbs. After placing the rock in a graduated cylinder…

A: * Mass of a rock = 0.072 lbs ( lbs = 453.592 g ) = 32.65 g * Initial volume of graduated cylinder =…

Q: 33.0 pl. drops of two different liquids are put on the same surface: Liquid X Liquid Y Note for…

A: Given that neither the liquid X nor the liquid Y interacts strongly with the surface. This means…

Q: Mass (g) Height (cm) Diameter (cm) Cylinder A 15.560 5.11 1.20 Cylinder B 35.536 5.90 1.30 In…

A: Volume can be calculated using the following equation.

Q: A rock weighing 87.9 grams was placed in 115 ml of water. The level of the water rose to 154 ml.…

A:

Q: You can identify a metal using its density. If you have a metal brick that you measured to be 5…

A: A multiple choice question based on identification of metal, which is to be accomplished.

Q: 4.31666666667   What are the significant figures?

A: Significant figures - Total number of digits in a number including the last digit whose number is…

Q: Perform the calculations below and give the results with correct significant figures. 27.8 g +…

A:

Q: The mass of a piece of metal at 172.3 K was found to be 27.0 grams.  What is the density of the…

A: Given that,Mass of piece of metal = 27.0 gVolume = 5.8mLNow you calculate the density in mg/L

Q: Convert the following 3.0 x 10^-12 g/cm^3 = ng/m^3

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: A student measures a block to weigh 127.95 grams what would this mass be in milograms with the…

A: Given – Mass of block = 127.95 g   To find - convert g to mg

Q: "A metal with a mass of 107.1g was placed into a graduated cylinder and completely submerged. The…

A: It is known that the density is the mass per unit of volume. Density = MassVolume d = mV

Q: The beakers shown below have different precision as shown. Suppose you combine the water from these…

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

Q: 4. Convert 0.0102 lb/in³ (pounds per cubic inch) to mg/mL using dimensional analysis.

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: What is the density of an unknown metal of 45.36 g of metal occupies a volume of 3.62 cm^3?

A: Density can be calculated by dividing mass( in gram) by Volume in cm3

Q: A student estimated that the volume of a crucible was 28.6 mL. When the volume was accurately…

A: percentage error is given by  % error = (experimental value - actual value ) X 100 / actual value.

Q: The area of a 15-inch pizza is 153.4 in. Express this area in square centimeters. (1 in 2.54 cm)…

A: The area of a 15 inch pizza is 153.4 in2Convert the area in cm2

Q: What is the Volume of 9.86 x 10^-2 pounds 7.90 g/mL steal ( hint use the determined density of steal…

A: Given data, Density of steel = 7.90 g/mL 1 pound = 453.6 g Mass of steel = 9.86 x 10-2 pounds =…

Q: Answering to the correct number of significant figures, what is 5.80 x 120? A) 696 B) 700 C) 7.0 x…

A: The given equation is, 5.80 × 120 = 696

Q: Question 1: Determine whether the answer to each calculation has the correct number of significant…

A: (1)

Q: Convert 5 x 10^12 mm^3 into Gal

A: Solution has been given in next step.

Q: Wire 1 0.0404 0,610 Wire 2 0.0195 ? 0.0105 (r) (in) 0.0193 Length(in) 0.0114 O 0.0136 (lbs) ?…

A: The objective of the question is to calculate the density of wire  in kg/mL with the given data.

Q: A student estimated that the volume of a crucible was 28.6 mL.  When the volume was accurately…

A: Percent error can be calculated using the following formula.

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.