Which of the following is not a valid conversion factor? 1/100 centimeter 1mL/1cm^3 1kilometer/1000 meters 1meter/10 milimeters

Answers

Answer 1

Answer: 1meter/10 milimeters which should be 1000 mm

1m=1000mm

International System of Units (SI Units) are organized body of measurements for physical quantity. They are set to be the norm or global norm scaling for every physical quantity which includes kilogram, meter, second, ampere, kelvin, candela and mole. These measurements then can increase or decrease by the power of ten, multiplied or divided. As said and explained, the SI is helpful in describing objects because
1. They give us the idea of how much matter is contained in that single substance or the current state the matter is in or how hot or cold. We measure and can quantify the quality of the specific matter.
2. SI Units are a global set of measurement hence, we can communicate with ease from western to eastern countries with these measurements without having problems in terms of portraying or displaying a set of physical quantities.

Answer 2

Answer:

Answer:hello

Explanation:

Task masters

Is correct! It should be answer(4) or (D)

Related Questions

What is true about Carbon-14 and Carbon-12?a. The mass of the Carbon-14 sample is less than the Carbon-12 sample, but the reactivity of both samples was the same. b. The mass of the Carbon-14 sample is greater than the Carbon-12 sample, but the reactivity of both samples was the same . c. The reactivity of the Carbon-14 sample is less than the Carbon-12 sample, but the mass of both samples was the same. d. The reactivity of the Carbon-14 sample is greater than the Carbon-12 sample, but the mass of both samples was the same.
Which rule should be followed when naming binary acids
One of the first labs to analyze oxygen consumption was
The combination of two or more atoms, from the same or different elements, creates a(n)__________. a. element c. molecule b. atom d. mixture
Molding a shape from soft, malleable material (clay or plaster) or constructing a shape from harder material (such as metal or paper). Molding is what a child does with Play-Doh or origami.

What physical state of matter is associated with the strongest attractive forces between particles (molecules, ions, or atoms)?

Answers

The answer is solid.

Solid, physical state of matter is associated with the strongest attractive forces between particles (molecules, ions, or atoms).

Among the other states of matter that is liquid, gas; solid is the one that is having strongest attractive forces between particles (molecules, ions, or atoms).

An element X has two isotopes. X–15 has 7 protons and 8 neutrons. Determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus. a. atomic number = 8; mass number = 9
b. atomic number = 8; mass number = 17
c. atomic number = 7; mass number = 17
d. atomic number = 7; mass number = 15

Answers

c. Atomic number = 7; mass number = 17

The atomic number of the first isotope is 7.

Isotopes of the same element have the same atomic number, so the atomic number of the second isotope must also be 7.

Mass number = no. of protons + no. of neutrons, or

A = p + n

∴ A = 7 + 10 = 17

Options “a.” and “b.” have the wrong atomic numbers, and option “d.” has the wrong mass number.

Answer:

Explanation:

How many moles of NO3 are there in 6.2g

Answers

6.2 divided by the mass number of NO3 is 0.1 moles.

Which of these is an appropriate instrument to measure mass?balance
burette
ruler
graduated cylinder

Answers

The appropriate instrument to measure mass is through the use of a balance. This type of equipment is different from your regular weighing scale. The balance actually measures based on a known mass unlike the weighing scale which measures only the weight of an object.

Answer: Balance

Explanation: Got it right on my test

New Pressure of gas when temp is 235 k

Answers

There is not much information given so I would have to make certain assumptions. Here are the following:
1. the gas is ideal
2. The gas is in its standard pressure and specific volume. (1atm and 22.4L/mol)
3. There is no initial temperature hence the pressure given the assumptions above is the "new" pressure.

PV=nRT

P= (0.0821L.atm/mol K)(235)/(22.4L/mol)
P=0.861 atm (below atmospheric pressure)

2Na + 2H2O mc012-1.jpg 2NaOH+H2, what mass of Na is required to yield 22.4 L of H2 at STP? (The atomic mass of Na is 22.99 u.)

Answers

46.0g Na

Since 22.4L of anything at STP is one mole, you can use your mole fraction to easily determine the # of moles of Na to produce one mole of H2. In this case, 2 moles of Na yield 1 mole H2, so all you need to do now is convert to grams. (Moles x Molar mass) which is 2 moles Na X 23g . this gives you the answer of 46g of Na.

Other Questions

What do chemists measure concentration with?

1-Propanol is combusted to provide heat. The equation and the enthalpy change for the process are shown below. C₃H₇OH(l)+4.5O₂( g)→3CO₂( g)+4H₂O(l)ΔH=−2,021 kJ Below is a list of sentences that describe a chemical process. Choose all of the sentences that apply to the above rea Check all that apply. a This process is exothermic. b The enthalpy change for 2C₃H₇OH(l)+9O₂( g)→6CO₂( g)+8H₂O(l) is 2,021 kJ c The enthalpy change for 2C₃H₇OH(l)+9O₂( g)→6CO₂( g)+8H₂O(l) is −4,042 kJ d The enthalpy change for 2C₃H₇OH(l)+9O₂( g)→6CO₂( g)+8H₂O(l) is −2,021 kJ e This chemical process transfers heat from the surroundings to the system. f The enthalpy change for 2C₃H₇OH(l)+9O₂( g)→6CO₂( g)+8H₂O(l) is 4,042 kJ g This process is endothermic. h This chemical process transfers heat from the system to the surroundings.

Can someone pls help indicate the number of significant figures with these numbers: 34g, 564 l, 19.3 mm, 23.45 mg, 101 km, and 3400 g

Why do atoms with greater numbers of protons have greater electronegativity?