CHEMISTRY HIGH SCHOOL

The speed in which the moon orbits the earth is 500 mph.

a. True
b. False

Answers

Answer 1
Answer:

Answer: False

Explanation: The moon travels at 1.42 mph around the Earth.
Answer 2
Answer:

Answer:

false

Explanation:

Related Questions

A temperature of 37°C is equivalent to a temperature of(1) 98.6 K (3) 310. K(2) 236 K (4) 371 K
Compared to a 26-gram sample of NaCl(s) at STP, a 52-gram sample of NaCl(s) at STP has(1) a different density(2) a different gram-formula mass(3) the same chemical properties(4) the same volume
A sample of sodium reacts completely with 0.213 kgkg of chlorine, forming 351 gg of sodium chloride. What mass of sodium reacted?
An ion that consists of 7 protons, 6 neutrons, and 10 electrons has a net charge of(I ) 4- (3) 3+(2) 3- (4) 4+
Why is mass conserved inchemical reactions?

Cohesion is the tendency for the same type of molecules to stick together. TRUE or FALSE

Answers

true

cohesion is the tendency for the same type of molecules to stick together!

A student wants to make an electromagnet. Which items are needed?magnet copper wire
copper wire, metal nail, battery
magnet, copper wire, metal nail
battery, heat source, copper wire

Answers

Answer:

copper wire, metal nail, battery

Explanation:

To create an electromagnet, the material to be magnetized (such as a metal nail) is placed inside a solenoid, the ends of the coils are connected to a circuit that includes a battery.

Current is allowed to flow for a few seconds and then cut off. The polarity of the magnet depends on the direction of flow of current in the solenoid.

Which of the following solutions contains the greatest number of ions?. . 1) 200.0 mL of 0.10 M iron (III) chloride. 2) 800.mL of 0.10 M sucrose

Answers

The number of ions is determined by multiplying the given volume and the molarity of the solution. The product is multiplied to the number of ions when the solution dissociates. In this case:

1. 200.0 mL of 0.10 M iron (III) chloride = 0.2*0.1* 4 = 0.08
2. 800.mL of 0.10 M sucrose = 0.8 * 0.1 * 1 = 0.08

The two solutions have the same number of ions. 

If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water then what is the solutions molality?

Answers

The molality of a solution is calculated by taking the moles of solute and dividing by the kilograms of solvent.

Electrons, protons, and neutrons are three subatomic particles of an atom. If the atom undergoes a change and becomes a positive ion, which subatomic particle is lost in this process? Neutron Proton Electron

Answers

Answer : The correct option is, Electron.

Explanation :

There are three subatomic particles of an atom which are electrons, protons and neutrons. The protons are positively charged, the electrons are negatively charged and neutrons are neutral (no charge).

A neutral atom is an atom that has same number of electrons and protons.  When a neutral atom gain an electron, it becomes a negatively charged ion.  When a neutral atom lose an electron, it becomes a positively charged ion. That means the atom change when the electron is lost or gained.

Hence, if the atom undergoes a change and becomes a positive ion, in this process the lost subatomic particle is electron.
electrons are lost because they have a negative charge. neutrons are neutral meaning no charge and protons have a positive charge

According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 2C(s) + 3H2(g) → C2H6(g) 2C(s) + 2H2(g) → C2H4(g) N2(g) + 3H2(g) → 2NH4(g) N2(g) + O2(g) → 2NO(g)

Answers

The answer is N2+3H2->2NH4. You can get the heat change on Table I. After checking the table I, you can get the ΔH for every reaction. The positive sign means absorbing energy and negative sign means releasing energy.
Other Questions
Which conclusion was drawn from the results ofthe gold foil experiment?(1) An atom is electrically neutral.(2) An atom is mostly empty space.(3) The nucleus of an atom is negativelycharged.(4) The electrons in an atom are located inspecific shells.
Maple syrup, which comes from the sap of maple trees, contains water and natural sugars. It's a clear, brown liquid and the sugars can’t be separated by filtration. Under which category will you classify it?suspensioncolloidsolutioncompoundelement
The number of neutrons in the nucleus of an atom can be determined by(1) adding the atomic number to the mass number (2) subtracting the atomic number from the mass number (3) adding the mass number to the atomic mass (4) subtracting the mass number from the atomic number
How many formula units are there in 0.9876 grams of zinc hydroxide