What information does a chemical formula of a compound provide?a. The type and amount of elements
b. The different kinds of compounds included within the chemical formula
c. The types of molecules present in a formula
d. The correct amounts of substances to mix together to make a formula

Answers

Answer 1

Answer: I think the best option is A. A chemical formula of a compound provides information on the type and amounts of elements in that compound. For instance, we have NaOH. From the given formula, we see that it contains the elements sodium, oxygen and hydrogen. Also, their corresponding number of molecules.

Related Questions

Which metal has no reaction with dilute hydrochloric acid or hydrochloric acid and forms a black oxide
In the last 100 years, the level of CO2 in the atmosphere has been significantly increased by man by: pesticides the burning of fossil fuels domestic heat incineration of waste products
A solution has a [OH-] = 8.6 x 10-5. Answer the following questions. pOH = pH = [H+] =
What is the purpose of interphase in the eukaryotic cell cycle?
Which general trend in period 2 on the Periodic table as the elements are considered in order of increasing atomic number? 1)increasing atomic radius 2.) decreasing electronegativity 3.) increasing 1st ionization energy 4.) decreasing atomic mass

Mr. Fuller assigned his science class a lab comparing the masses of objects to the nearest gram using a balance. The mass of a paper clip is about 1 gram. How many paper clips will it take to balance the scale, if it is determined that a 1 centimeter cube of gold has the mass of 19.3 grams?

Answers

Like about 15 paper clips to balance the scale

Answer:

C) 19

Explanation:

took the test

How many moles are in 82 g of water?

Answers

Take 82 grams and divide it by the gfm of water which is 18 g/mole...(82g)/(18.0g/mole)=4.555 -> the answer is 4.6 moles

Final answer:

The number of moles in 82 grams of water is calculated by dividing the given mass (in grams) by the molar mass (in g/mol). Thus, the number of moles in 82 grams of water is 4.56 moles.

Explanation:

The number of moles in 82 g of water can be calculated using the molar mass of water. The molar mass of water is the sum of the molar masses of its constituent elements. Hydrogen has a molar mass of approximately 1 g/mol and oxygen has a molar mass of approximately 16 g/mol. Therefore, the molar mass of water is 18 g/mol. To calculate the number of moles in 82 g of water, we divide the mass by the molar mass:

Number of moles = Mass (g) / Molar mass (g/mol)

Number of moles = 82 g / 18 g/mol

Number of moles = 4.56 mol

Learn more about moles in water here:

brainly.com/question/34773880

#SPJ2

Which compound is more soluble in water acetone or 2 - pentanone

Answers

The compound that is more soluble in water is acetone rather than 2-pentanone. Acetone or propanone cannot hydrogen bond with themselves but can hydrogen bond with water molecules. One of the slightly positive hydrogen atoms in a water molecule can be sufficiently attracted to one of the lone pairs on the oxygen atom of propanone. For 2 - propanone, it cannot easily bond with water because of steric hindrance

You fill a rigid steel cylinder that has a volume of 20.0 L with nitrogen gas to a final pressure of 2.00 *10^4 Kpa at 28c How many kilograms of N2 does the cylinder contain

Answers

The quantity of nitrogen the cylinder contains is 4477.8 g

What is pressure?

Pressure is a force exerted in a perpendicular direction in any item.

By ideal gas law

PV = nRT

$P =(w)/(M) =(RT)/(V)\n$

w = mass

Volume is 20.0 l

Pressure is $2.00 * 10^4 \;Kpa$

The molar mass of nitrogen is 28 g/mol

R is gas constant = 0.0821

Temperature is 28 converted into kelvin that is 301 k

Putting the values

$197.6 =(w)/(28) =(0.0821 * 301 )/(20\;l)\n\nw = 4477.8 g$

Thus, the mass of nitrogen is 4477.8 g.

Learn more about pressure, here:

brainly.com/question/356585

Answer : The mass of $N_2$ gas is, 4477.8 g

Solution :

using ideal gas equation,

$PV=nRT\n\nP=(w)/(M)* (RT)/(V)$

where,

n = number of moles of gas

w = mass of gas

P = pressure of the gas = $2* 10^4Kpa=197.6atm$

conversion : $1atm=101.2Kpa$

T = temperature of the gas = $28^oC=273+28=301K$

M = molar mass of $N_2$ gas = 28 g/mole

R = gas constant = 0.0821 Latm/moleK

V = volume of gas = 20 L

Now put all the given values in the above equation, we get the mass of gas.

$197.6atm=(w)/(28g/mole)* (0.0821Latm/moleK* 301K)/(20L)$

$w=4477.8g$

Therefore, the mass of $N_2$ gas is, 4477.8 g

Suggest why the ph of the gut secretions varies at different regions in gut answer key anatomy

Answers

The answer in this question is just easy and simple, since there are lots of different enzymes being secreted in the stomach (the enzymes are made of protein and can be denatured by alternation of pH, each of these enzymes required to have a specific optimal pH.

Answer:

The correct answer is because they work at different pH levels.

Explanation:

The pH varies because the different enzymes secreted in the stomach work at different pH levels. Gastric secretion is the most important stage of digestion since when the food comes into contact with a low pH and the enzymes present, they dissociate it and denature the proteins present.

Have a nice day!

What category of elements does krypton gas belong to?A. metals
B. metalloids
C. non-metals

Answers

The correct answer is C. Non-metals

Explanation:

Krypton is one of the 118 chemical elements that have been identified. Krypton's main characteristics include lack of odor, color, and low reactivity, due to this, this element is classified as a noble gas and in the periodic table is part of the Group 18. Moreover, Krypton is part of the non-metals category that includes elements with low density, melting/boiling point, and conductivity, which are all features exhibit by Krypton as this has low electricity and heat conductivity, low density, low melting point (around -157 °C) and low boiling point (-153 °C). Thus, the category Krypton gas and in general Krypton belongs to is non-metals.

An element is a pure substance made up of only one kind of atom, each of whose nuclei contains the same amount of protons. A substance whose atoms all contain the same number of protons is said to constitute an element; alternatively, all the atoms of a certain element must contain the same number of protons. Here 'Kr' is a non-metal. The correct option is C.

The elements that absorb or gain electrons to generate negative ions are known as non-metals. In their outermost shell, non-metals often have 4, 5, 6, or 7 electrons. High electronegativities are seen in non-metals. This indicates that non-metal atoms exhibit a significant propensity to attract more electrons than they would ordinarily have.

Krypton is a Group 18 rare gas and chemical element with the atomic number 36 and the symbol Kr.

Thus the correct option is C.

To know more about non-metals, visit;

brainly.com/question/30458857

#SPJ6

Other Questions

Primary alcohols can be dehydrated to produce A) ethers B) organic acids C) esters D) aldehydes

Rita divides Avogadro’s number (approximately 6.022 mc002-1.jpg 1023) by 2.0550 to calculate the number of atoms in a sample. Which expression gives her result to the correct number of significant figures?

Why do some substances react with each other while others do not

What is the total number of valence electrons in an atom of sulfur in the ground state?A. 6B. 8C. 3D. 4