An astronaut on the moon places a package on a scale and finds its weight to be 19 N. (a) What would the weight of the package be on the earth?  N (b) What is the mass of the package on the moon?  kg (c) What is the package's mass on earth

Q: The speed of light in a vacuum is 2.998X10⁸m/s. What is itsspeed in (a) km/h; (b) mi/min?

A: Speed of light- This phenomenon is is proposed by Einstein in 1905. It is denoted by ‘c’. It is…

Q: A gallon (3.78L) of latex paint can cover 385 ft2 of the surface of a wall. What is the average…

A: Since, 1 L = 103 cm3∴3.78 L = 3.78 x 103 cm3Since 1 ft2 = 929 cm2∴ 385 ft2 = (385x929) cm2…

Q: A typical animal cell is said to contain some 10 billion protein molecules that need to be sorted…

A: Given the average molar mass of a single amino acid (AA) = 110 dalton / AA Average number of amino…

Q: The density of air at ordinary atmospheric pressure and25 °C is 1.19 g/L. What is the mass, in…

A: When density of any specific matter (gas, solid, or liquid) is provided along with its occupied…

Q: How do molecules of elements and molecules of compounds differ? In what ways are they similar?

A: Given compounds,        Molecules of elements        Molecules of compounds

Q: What properties distinguish solids from liquids? Liquids from gases? Solids from gases?

A: Solids have no empty spaces between the molecule which gives them a definite and rigid structure.…

Q: Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter 6.304X10³in) can…

A: Copper is malleable and ductile metal which can easily change to wires and sheets. This is because…

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: What is the mass of 18 cm cube of iron if the density of iron is 7.87 g/cm ^3?

A: Step : 1             What is the mass of 18 cm cube of iron if the density of iron is 7.87 g/cm 3?

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

A:

Q: What is the density (in g/mL) of a cube that has equal sides of 12 inches and weighs 491 pounds?

A:

Q: A newspaper reported that the attendance at Slippery Rock’shome football game was 16,532. (a) How…

A:

Q: Which of the following is an incorrect statement on mass? * All statements are correct. Mass is…

A: Which of the following is an incorrect statement on mass? * All statements are correct. Mass is…

Q: 7. The speed limit on a road in Mexico is 90 km/hr. What is this speed equivalent to in miles per…

A:

Q: Which of the following is a homogeneous mixture? a) water and sand b) water and salt c) water and…

A:

Q: If an automobile is able to travel 400 km on 47.3 Lof gasoline, what is the gas mileage in miles per…

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: The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the temperature changed. Is this…

A: A chemical change is observed when there is a change in the chemical composition of elements.…

Q: A    bullet    recovered    from    a   crime    scene    has   a   mass    of    9.68    g.    A…

A: .357 Magnum is a low velocity cartridge. The .357 is to some extent reliant on mechanical wounding…

Q: Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of water…

A: Answer : As per the reaction CH4(g) + 2O2(g) ---> CO2(g)  + 2H2O(g) As per the ideal gas equation…

Q: On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink…

A: Given: Mass of Earth's crust = 2 ton = 2000 Kg.                             (Since 1 ton = 1000 Kg)…

Q: You are driving 65 mi/h and take your eyes off the road for “just a second.” Whatdistance (in feet)…

A: Given data contains, Velocity is 65 mi/h.

Q: If amigrating loon flies at an average speed of 14 m/s, what is itsaverage speed in mi/hr?

A: The unit conversion has an important role in the calculation of numerical and some standard data.…

Q: A 12-oz vanilla milkshake at a fast-food restaurant contains 525 Calories. What quantity of energy…

A: Given: Energy = 525 calories.

Q: If the price of gold is $1,318.61 per troy ounce (1 troy ounce is exactly 31.1035 grams), what is…

A: Given   The price of gold is $1,318.61 per troy ounce. The second given price is $1,000,000. The…

Q: A 2.0-liter volume of hydrogen gas combined with 1.0 liter of oxygen gas to produce 2.0 liters of…

A: Step : 1             Does oxygen undergo a chemical or physical change?

Q: 1.17 A solid white substance A is heated strongly in the absence ofair. It decomposes to form a new…

A:

Q: 3. Which of the following states of matter has a fixed volume and a fixed shape?

A:

Q: he following picture is a representation of what type of matter? a mixture of compounds an element O…

A: Note: You have uploaded two different questions at one time. But I am solving only first question…

Q: A cyclist rides at an average speed of 24 mi/h If he wants to bike 151 km, how long (in hours) must…

A: Given : Speed of cyclist = 24 mi/h And distance travelled = 151 Km

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: Normal body temperature has been commonly accepted as 37.0 °C (although it varies depending on time…

A: Firstly, the Kelvin temperature was calculated. It is calculated by adding the given temperature…

Q: The number 7.134×10^7in normal decimal notation is?

A: Basic rules to convert scientific notation into decimal notation :If the exponent is positive, move…

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

A: Let the unknown number be x. The twice of the number= 2x

Q: 4. Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot having a volume of…

A: See the solution given below of question 4 (There are multiple questions: Since you have posted…

Q: 7. A submarine cruises through the water at a speed of 26.4 nautical miles per hour. If there are…

A: Question-7 Given data speed of submarine =26.4 nautical mileshr and  1.15 regular miles=1 nautical…

Q: (a) If an electric car is capable of going 225 km on a singlecharge, how many charges will it need…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as

Q: A solid white substance A is heated strongly in the absence ofair. It decomposes to form a new white…

A: The chemical reaction taking place is,

Q: Although the standard of mass is, strictly speaking, the kilogram, in chemistry we more commonly…

A: Answer - Although the standard of mass is, strictly speaking,the kilogram, in chemistry we more…

Q: Suppose an astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 132 kg, and…

A: The weight of a system is given by mg, where m is the mass of the system and g is the g is…

Q: The weight of helium in a balloon can be estimated by calculating the volume of a sphere with the…

A: Formula used:  Valume of sphare: 4/3πr3  Where r = radius of sphare Mass = volume* density  Unit…

Q: Which of the following is an element? Fe,(SO,), Li O2

A: The substances that have a tendency to occupy space are considered as matters. The matters can be…

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 length of the two pieces of copper wire obtained after the final cut (which contain one copper…

Q: The area of a telescope lens is 7903 mm² (a) What is the areain square feet (ft² )? (b) If it takes…

A: a) Conversion of mm into feet: 1 feet=304.8 mm1 mm =1304.8 feet=0.00328084 feet Calculation of area…

Q: B. Perform the following calculations, and give the correct number of significant figures in the…

A:

Q: How many milligrams of arsenic would be a typical amount in a 60.-kg adult? Express the mass as an…

A: Minerals are vital for building the new tissues, muscle contraction, the transmission of nerve…

Q: A sample of gold (Au) has a mass of 26.15 g. Given that the theoretical density is 19.30 g/mL, what…

A: Given :-  mass of gold = 26.15 g  density of gold = 19.30 g/mL  To calculate :  volume of gold

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.