Chemistry High School

The units of a formula mass are
a. amu
b. micrograms
c. moles
d. grams

Answers

Answer 1

Answer:

the units of a formula mass are amu.

Related Questions

Mercury is an element that forms during _____

Answers

Answer:

forms of mercury

Explanation:

Answer:

Explanation:

Mercury is an element and a metal that is found in air, water, and soil.Mercury rarely occurs uncombined in nature, but can be found as droplets in cinnabar (mercury sulfide) ores. China and Kyrgyzstan are the main producers of mercury. The metal is obtained by heating cinnabar in a current of air and condensing the vapour.

hope this helps! Have a good day or night! :)

how does the immune system uses feedback mechanisms?

Answers

Answer:The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with.

PLZ HELP ASAP THIS IS DUE LIKE RIGHT NOW

Answers

Answer:it's either the first or second one

Explanation:

the layers of the earth

Two substances in a mixture differ in density and particle size. theses properties can be used to

Answers

Answer:

option 1. Two substances in a mixture differ in density and particle size. These properties can be used to separate the substances. These properties can be manipulated in order to have a better separation between the two substances.

Explanation:

Answer:

Two substances in a mixture differ in density and particle size. These properties can be used to separate both of them using the separating funnel or using filtration (filter paper).

Explanation:

Since their densities are different, one substance should float above the other in the mixture which allows for the separating funnel to let the substance sinking below (with the heavier density) to flow out first before changing the beaker to let the lighter substance flow out.

The substance with a bigger particle size would not be able to pass through the filter paper unlike the substance with the smaller particle size as the filter paper's pores is not big enough for it to pass through, separating both substances (with one on the paper and the other outside the filter paper, preferably in the beaker placed below the paper).

Which one of the following is not an agent of chemical weathering?
proprionic acid
carbon dioxide
acid rain

Answers

Answer:

its proprionic acid which do not cause any hazardous effect on environment it only effect internal body of human if it is ingested.

Explanation:

Where does the chemical energy of food start?

Answers

Answer:

Chemical energy in foodChemical energy in foodAs the bonds between the atoms in food loosen or break, a chemical reaction takes place, and new compounds are created. The energy produced from this reaction keeps us warm, helps us move, and allows us to grow. Different foods store different amounts of energy

Explanation:

plz mark as brainilist

Answer:

BELOW !!

Explanation:

Chemical energy in food

As the bonds between the atoms in food loosen or break, a chemical reaction takes place, and new compounds are created. The energy produced from this reaction keeps us warm, helps us move, and allows us to grow. Different foods store different amounts of energy.

2. How many liters of propane gas (C3H8) will undergo complete combustion with 34.0 L of oxygen gas? ___ C3H8 (g) + ___ O2 (g → ___ CO2 (g + ___ H2O(g

Answers

Answer:

6.8 liters of propane gas will undergo a complete combustion with 34.0 L of oxygen gas.

Explanation:

Given;

combustion reaction of propane and oxygen;

C₃H₈ + O₂(g)  → CO₂(g)     + H₂O(g)

Balance the chemical reaction as follows;

C₃H₈ + 5O₂(g)  → 3CO₂(g)   +   4H₂O(g)

From the balanced equation;

1 mole of C₃H₈ ---------------- 5 moles of 5O₂(g)

x Liters of C₃H₈ ----------------- 34.0 Liters of O₂(g)

x = 34 liters / 5

x = 6.8 liters

Therefore, 6.8 liters of propane gas will undergo a complete combustion with 34.0 L of oxygen gas.

Please I need help I really don’t get this lol

Answers

Answer:

The pointer pointing to the grey and white balls are either proton or nuetron i van't really tell cause their grey and white.

The whole clster of balls is the Nucleus

The black balls on the lines are electrons

And the lines are the energy level

Explanation:

A science teacher asked students to calculate the density of a toy block. The mass of the block was 110 grams and the volume of the block was 8 cubic centimeters. What was the density of the toy block in cubic centimeters?​

Answers

Answer:

13.75

Explanation:

Density is equal to mass divided by volume. 110/8 = 13.75

No help just posting a picture

Answers

Oh okay I learned a lot.
Stay safe homie

What is the energy of a radio wave whose frequency is 6.2 x 106 Hz?

Answers

Answer:

657.2 Hz

Explanation:

please help me ASAP PLEASE​

Answers

24 cm^3 CO2 / 1 * 1 dcm^3 / 1000 cm^3 * 1 mol / 24 dcm^3 = 0.001 mol of CO3 is required

Can anyone explain the process of photosynthesis in detail? (Answer gotta be long. Sorry! Also I am in middle school. Means I don’t know which subject this is so I picked chemistry.)

Answers

Sure, In order to grow and survive, plants need to perform photosynthesis. So the plant intakes Carbon Dioxide (CO2), Sunlight and Water (H2O), which goes into the chloroplasts. Once inside the Chloroplasts, the Reactants are turned into the products Glucose (C6H12O6) and Oxygen (O2). The glucose is then used as food/fuel for the plant, and the oxygen is to be breathed by humans or other animals.

manganese atom has 30 neutrons and atomic number 25
determine the electron cloud charge of manganese​​​

Answers

Answer:

the most common oxidation no.of manganese is +2 +3 +4 +6 +7

+2+3+4+5+6+7

Mostly the anwser

SOMEONE ANSWER?!!?!?!,!,EMERGENCY Can someone tell me the answer plz plz I’ll give you brainlist and points plz This is my final test No wrong answers

Answers

Answer: Should be A)

Explanation:

the size of planets effects the amount of gravitational force each planet has, like jupiter, it has the most gravity.

Please help me vote you brainiest

Answers

Answer: D

Explanation: P = W/t

W = F d

When dividing, if you have a large number over a small, you get a large number. We want a small number, so we want the opposite for our P : W/ t formula. We want a small Work and a large time.

Right off the bat, the two with the least time aren't right then.

From there, we can estimate how much work it would take using the W = F d equation. If there is a small distance, there is less work, which is what we want to achieve a small work over large time.

So, the choice with the most time and the least distance should be correct.

Formula for the compound that contains Mg2+ and O2-

Answers

Answer:

MgO.

Explanation:

charges of both satisfy one another (balanced) -- producing a compound MgO.

Determine which elements or compounds are missing from the following reaction equation: hydrogen + ________= water
A. oxygen
B. hydroxide
C. liquid
D. glucose

Answers

A. oxygen (aka h2o, 2 hydrogen atoms and 1 oxygen atom)

PLEASE HELP ME MY MOM COMES HOME SOON!! ITS 4AM!!
Blaire is teaching her little brother to ride his bike. She uses 7 N of force to push a 14 kg bike. What is the acceleration?
98 m/s2
0.5 m/s2
21 m/s2
2 m/s2

Answers

Answer:

The solution is

Explanation:

a = f/m

a =7/14

a=1/2

a=0.5

Acceleration of bike is 0.5 m/s²

Given that:

Force used in push = 7 N

Mass of bike = 14 kg

Find:

Acceleration of bike

Computation:

Force = Mass × Acceleration

Force used in push = Mass of bike × Acceleration of bike

7 = 14 × Acceleration of bike

Acceleration of bike = 7 / 14

Acceleration of bike = 0.5 m/s²

Learn more:

https://brainly.com/question/16685492?referrer=searchResults

how many grams are in 1.09 moles of glucose?

Answers

Answer: 196.36990920000002
196.36990920000002 exactly

What do the elements in group 18 have in common?

Answers

Answer: They are all odorless, colorless, monatomic gases with very low chemical reactivity.

Explanation: Plz give brainliest

Which element has the least density at STP?

Answers

Answer:

Helium, this noble gas has the least density at STP

Explanation:

1. What three characteristics determine the type of sedimentary rock?

Answers

Answer:

Characteristics of Sedimentary Rocks. ● The color of the sedimentary rock is determined by the content of the strata that were pressed together to form it. If the layers have a high organic content, the rock is usually gray to black in color. On the other hand, high amount of minerals give the rock the color of the mineral.

Hopefully, this helps! :D

Answer:

texture

color

and another one is, well

Which of the following does NOT
have large coal deposits?

Answers

Answer:

Mexico

Explanation:

The top five countries with the largest proven coal reserves

United States – 249 billion tonnesRussia – 162 billion tonnesAustralia – 149 billion tonnesChina – 142 billion tonnesIndia – 106 billion tonnes.

Mexico isn't on this list

hope this helps, pls mark brainliest :D

Do I use molar mass when the problem gives me grams? (Yes or No), Right answer gets brainliest.
(Stoichiometry Review)

Answers

Answer:

yes

Explanation:

yes because the molar mass is an intensive property of the substance, that does not depend on the size of the sample. In the International System of Units (SI), the base unit of molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.

Answer:

Yes, if your calculating from grams to moles.

The atmospheric gases in the thermoaphere are heated___.

Answers

Answer:

Directly by the sun

Directed by the sun! Hope this helps

Genetics is the study of

Answers

Genetics is a term that refers to the study of genes and their roles in inheritance

When we drink water, it is absorbed into our blood through the digestive tract. If the concentration of water in body cells is low, cells must get water from the blood. What process allows water to enter body cells from the blood?

Answers

Answer:

Osmosis

Explanation:

Water is very essential for the body. When we drink water, our blood cells absorbs water from the body. This happen by a process called as osmosis process. Osmosis is type of diffusion process.

Water along with oxygen and carbon dioxide are some of the simple molecules that moves into the blood cell. Osmosis is the process by which water molecules passes into the cell bodies through its semi permeable membrane.    

do all-stars mak energy through fusions

Answers

Yes they do make stars through fusions

B. The mass of the sugar and water is greater than the mass of the sugal
C. The mass of the sugar solution is greater than the mass of the sugar and water.
D. We do not have enough information to determine anything about the mass of the sugar, water, or the
sugar solution.
8. When combined in the correct ratio, hydrogen and oxygen atoms can form water as show below.
+
Hydrogen
Oxygen
Water
this example, water is an example of which of the following?

Answers

Answer: it’s the first one ☝️

Mass NEVER changes

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Find the value of this expression if x = 5 and y = 2.xy^2/-3 For the competitive firm in the labor market, the value of the marginal product is equal to the marginal revenue product because marginal A student uses visible spectrophotometry to determine the concentration of CoCl2(aq) in a sample solution. First the student prepares a set of CoCl2(aq) solutions of known concentration. Then the student uses a spectrophotometer to determine the absorbance of each of the standard solutions at a wavelength of 510nm and constructs a standard curve. Finally, the student determines the absorbance of the sample of unknown concentration. A wavelength of 510nm corresponds to an approximate frequency of 61014s1 . What is the approximate energy of one photon of this light? 91047J 91047J A 31017J 31017J B 5107J 5107J C 41019J 41019J D Submit Read the following passage and answer the questions that follow.The Strange Case of Dr. Jekyll and Mr. Hydeby Robert Louis StevensonPart 11. 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If you wanted to make 4 batches of the recipe and had 10 cups of milk to use, how much milk would you have left over?