CHOOSE ONE AND I WILK GIEV YOU BRAINLIEST AND DONT GUESS PLEASE!!!..

CHOOSE ONE AND I WILK GIEV YOU BRAINLIEST AND DONT GUESS PLEASE!!!..

Answers

Answer 1
6272.2737362282736363737373733.282726363
Answer 2

Answer:

c

Explanation:


Related Questions

Define the term 'structural isomerism'.

Answers

Answer:

In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is another compound whose molecule has the same number of atoms of each element, but with logically distinct bonds between them. The term metamer was formerly used for the same concept.

Explanation:

Foolow me amd if you think i am correct make me brainlist

Solve these problems remember significant figures

Answers

Answer:

56) 5,722 mL

57) 750 meters

58) 88 km/hr

59) 88 km/? (I can't give you a complete answer if there's no other unit)

60) 5,169g

61) 53.1m/sec

Explanation:

When you are doing sig figs you do its operations normally. However the way you round depes on the operation;

When you are adding or subtracting sig figs you round to the least number of decimal places. In the case where there is no decimal place keep it the same

When you are multiplying or diving sig figs you round to the least amount of sig figs

The work is in the picture

ellis measured the mass of five samples of quartz. his results were 39.75 g, 38.91 g, 37.66 g, 39.75 g, and 39.55 g. what was the mean mass of the samples? (p. 37

Answers

The mean mass of the given sample is 39.12g

The mean is the average of the values in the given set. It indicates that values in a particular data set are distributed equally.

mass of first sample = 39.75g

mass of second sample = 38.91g

mass of third sample = 37.66g

mass of fourth sample = 39.75g

mass of fifth sample= 39.55g

Total mass of the sample = 39.75 g + 38.91 g+ 37.66 +39.75 g + 39.55 g = 195.62 g

Number of samples = 5

MEAN = SUM OF MASS OF GIVEN SAMPLES / TOTAL NUMBER OF SAMPLE= 195.62/5= 39.12g

Therefore mean mass of the samples = 39.12g

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When mercury oxide is heated, it decomposes into mercury and oxygen. If 28. 4 g of mercury oxide decomposes, producing 2. 0 g of oxygen, what is the percent by mass of mercury in mercury oxide?.

Answers

In mercuric oxide percent by mass of mercury is 93 %.

The mercuric oxide molecular formula is HgO. When mercury is reacted with oxygen, then it forms the product mercuric oxide. Mercuric oxide has a molecular mass of 216 g/mol. It has a melting point of 500°C.

The balance equation for the reaction of decomposition of mercury oxide into mercury and oxygen is,

[tex]2HgO (s)→ 2Hg (l) + O _{2}(g)[/tex]

Mass of mercury oxide = 28.4 g

Mass of the oxygen = 2 g

In mercuric oxide percent by mass of mercury is,

[tex]Mass ℅= \frac{Mass \: of \: Mercury }{Mass \: of \: Mercury \: oxide} \times 100[/tex]

[tex]= \frac{28.4 - 2}{28.4} \times 100[/tex]

= 93 %

Therefore, in mercuric oxide percent by mass of mercury is 93 %.

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Which has a higher melting point k2O or MgO???
Please hurry!!

Answers

Answer:

MgO (Magnesium Oxide)

Explanation:

K20 = 1,343° ±5° C

MgO = 5,166°F (2,852°C)

MgO > K20

An -ite or -ate ending on the name of a compound indicates that the compound:

Answers

Explanation:

I'm not sure what it is

Mood stabilizers may be used to treat (2 points)
Group of answer choices

schizophrenia

bipolar disorder

major depression

ADHD

Answers

Answer:

A

Explanation:

it can be help to remove mood swing

Answer:

Bipolar disorder

Explanation:

People with bipolar disorder face extreme episodes of different moods, so mood stabilizers help calm those extremes down and allow the person to retain a consistent mood.

what is the formula of nitrous acid

Answers

Answer:

HNO2

Explanation:

It is a pale blue solution and it is only known in solution and gas form.

What happens to most of the radiant energy that is not converted to thermal energy?
a. It is used in photosynthesis.
b. It is reflected into space.
c. It is converted to electricity.
d. none of the above

Answers

B it’s reflected into space

How many molecules are in 1 mole of nitrogen sulfide

Answers

Answer:

46.07

Explanation:

im not 100 sure this is right almost tho

please mark brainliest

HELP ASAP, HELP NEEDED QUICK, IT'S TIMED
If the concentration of reactants is higher, then the reaction rate is ______.
Select one:
a. generally lower
b. rate determining step is eliminated
c. not affected
d. generally higher

Answers

Answer:

option D generally higher

What’s the answer????

Answers

Should be , b
. Not positive tho

What kind of bonding holds together

the atoms in a sample of pure zinc

Answers

Answer:

Metallic Bonding

Explanation:

Zinc is a metal, as such it's atoms are held together by the metallic bond. Metallic bond is a type of chemical bond formed between positively charged ions in which there is a collective sharing of a sea of valence electrons.

YOU BETTER NOT PASS THIS!! NEED ANSWERS NOW

What are you separating when you use the process of distillation? DESCRIBE how you would separate a mixture using distillation.

Answers

Answer:

the process of separating several mixtures of coal with the process of fractional distillation

Explanation:

Distillation is the process of separating the component substances from a liquid mixture by selective evaporation and condensation.

why do magnets move objects in different ways

Answers

Answer:

Each magnet has a north and south end. Only opposite ends can attract, But if the ends are the same, they push away from each other. Magnets in some engines make it spin in a certain direction.

in a Lewis structure, why must pairs of unshared of lone pairs if dots be placed around the outside of some of the atoms

Answers

Answer:

In a Lewis symbol, the symbol for the element is used to represent the atom and its core electrons. Dots placed around the atom are used to indicate the valence electrons. ... In 1916, Gilbert Newton Lewis, an American chemist, suggested that molecules were formed when atoms shared pairs of outer electrons.

Explanation:

Lewis structures show the electrons in the valence shell of atoms in molecules.

Lewis structures are representations of molecules. They consist of the symbol of the element and the valence electrons in the atoms. The electrons are often shown as dots.

The atoms in molecules could be lone pairs or bond pairs. The bond pairs are shown as two dots on an atom. Since lone pairs are localized on an atom, they are shown as dots on the symbol of the atom that contain them.

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Read the dictionary entry. The adjective radiant in a dictionary entry, showing syllable breakdown and pronunciation guide. 1. Releasing heat 2. Made of radiation 3. Filled with light or very bright The noun radiant in a dictionary entry, showing syllable breakdown and pronunciation guide. 1. The origin of a meteoric shower Read the sentence. She looked at the nighttime sky and saw the silver moon's radiant glow. Which dictionary definition best describes how the word "radiant" is used in this sentence? releasing heat made of radiation filled with light or very bright the origin of a meteoric shower

Answers

Answer:

Filled with Light or Very Bright

Explanation:

I took the quiz.

Answer:

your answer is the third one filled with light and very bright

Explanation:

i got it right on the quiz hope it helps

CAN SOMEONE PLZ HELP!!!
Are the chemical equations balanced or not?

Answers

Answer:

Remember, chemical reactions follow the law of conservation of mass. Chemical equations show this conservation, or equality, in terms of atoms. However, simply writing down the chemical formulas of reactants and products does not always result in equal numbers of atoms

Explanation:

Answer:

Yes

Explanation:

i think so as there are 2 h on the left

The colored circles below represent three fake elements A, B
and C.
The fake elements combine to form the following compound.
What is the chemical formula for the compound shown above?

Answers

The chemical formula for the compound is AB₂C₄.

What are chemical formula?

A chemical formula is define as a formula which identifies each constituent element by its chemical symbols, and indicate the proportionate number of atom of each elements.

Chemical formula is can also be called as empirical formula.

Example - Chemical formula for water is H₂O.

Chemical formula provides chemical composition of a compound.

Chemical formula of a compound is crucial when it represents a chemical equation.

Thus, the chemical formula for the compound is AB₂C₄.

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plz help asap
Choose all the answers that apply.

The elements in group 18 _____.

are highly reactive
are gases at room temperature
usually do not react with other elements
are in a group called the noble gases
are nonmetals

Answers

Gas at room temperature

Usually do not react with other elements

Are in a group called noble gasses

Are non metals

Raoul ate a meal of oats before seeing his doctor. Oats are made of mostly starch molecules. Raoul feels tired, so his doctor gave him a test and found that raoul’s cells contained glucose molecules, but they did not contain enough oxygen molecules. Does this explain why raoul feels tired?.

Answers

No, his digestive system is breaking down starch molecules, but his respiratory system may not be working properly.

Oat starch which is mainly stored in the oat endosperm is the most abundant carbohydrate component of oats, and its content varies between 40-50% depending on the variety and growing conditions. Sayer and White 2011. Starch after extraction of oat amylose content lipids was determined by Gudmundson and Eliasson.

Whole grain oats contain large amounts of valuable nutrients such as protein starch unsaturated fatty acids, and dietary fiber in soluble and insoluble fractions. Starch is composed of two glucose polymers amylopectin, and amylose which together form insoluble semi-crystalline starch granules. Both polymers are composed of conjugated glucan chains connected by branch points, but their structure and biosynthesis differ.

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2 points
Al + HCI—_AICI:
+_H2
Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion

Answers

Single Replacement bc Al replaces H and displaces H making it hydrogen gas H2

example of a man-made object that has been changed by weathering

Answers

Mount Rushmore, created by man and its outdoors

Answer: A man-made object that has been changed by weathering is the pyramids. The pyramids in Egypt have weathered slowly because of the dryness of the desert, but they have indeed weathered throughout the years.

I need help with this please! and thank you. if you don't know, don't comment please.

Answers

Answer:

S4O5

Explanation:

halogenation of propane​

Answers

Answer:

The halogenation of propane discloses an interesting feature of these reactions. All the hydrogens in a complex alkane do not exhibit equal reactivity. For example, propane has eight hydrogens, six of them being structurally equivalent primary, and the other two being secondary

Kinetic Energy Problems = KE = 0.5m x 12
1. 5 kg wooden block moving at a speed of 2 m/s
2. 71kg man walking at 1.0 m/s
3. 71kg man running at 5.0 m/s
4. 1816kg car traveling at 25 m/s

Answers

Explanation:

The kinetic energy of an object is given by :

[tex]K=\dfrac{1}{2}mv^2[/tex]

1. Mass, m = 5 kg

Speed, v = 2 m/s

[tex]K_1=\dfrac{1}{2}\times 5\times (2)^2\\\\=10\ J[/tex]

2. Mass, m = 71 kg

Speed, v = 1 m/s

[tex]K_2=\dfrac{1}{2}\times 71\times (1)^2\\\\=35.5\ J[/tex]

3.  Mass, m = 71 kg

Speed, v = 5 m/s

[tex]K_3=\dfrac{1}{2}\times 71\times (5)^2\\\\=887.5\ J[/tex]

4. Mass, m = 1816 kg

Speed, v = 25 m/s

[tex]K_4=\dfrac{1}{2}\times 1816\times (25)^2\\\\=567500\ J[/tex]

In Philip’s French class, the students are learning how to pronounce closed vowels and open vowels. The students are most likely studying French __________. A. syntax B. phonemes C. semantics D. morphemes

Answers

Answer:

It sounds like they are studying French phonemes

Explanations:

I just learned this.

The students were most likely studying French phonemes.

Words are distinguished from each other by respective sounds of the vowels in the word. There are open vowels and there are closed vowels. These exist in every language.

The part of language learning that has to do with the differentiation of pronunciation of sounds is called phonemes. This means that the students were most likely studying French phonemes.

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which element will chemically combine with fluorine to form a salt?
a. carbon
b. lithium
c. neon
d. oxygen

Answers

The answer is C
Hope this helps

similar
ffer.
jum
eride
Which statements are true regarding these two
compounds? Check all that apply.
Acetone is a covalent compound, while
sodium chloride is an ionic compound.
Ionic compounds conduct electricity well in
their solid (pure) form.'
Covalent compounds have weak attractions
between molecules, resulting in low melting
points.
ECI
1°C
olid

Answers

Answer:

-Acetone is a covalent compound, while sodium chloride is an ionic compound

-covalent compounds have weak attractions between molecules, resulting in low melting points

Explanation:

Answer:   A and C mah dudes

Explanation:   Edgy 2020   <3

What product should be recorded in the last row of the table?
2LiCl + 3O2
3LiCl + 2O2
2LiO + 3Cl2
3LiO+ 2Cl2

Answers

Answer:

2LiO+2CL2

Explanation:

took the test

Answer:

It's A. 2LiCl + 3O2

Explanation:

Process of elimination babyyyyy

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