Chemistry High School

Please help!
Best answer with explanation will be marked brainliest.

Please Help!Best Answer With Explanation Will Be Marked Brainliest.

Answers

Answer 1

Explanation:

I think it is d because it is a gas

Related Questions

difference between Ammonia and ammonium..
plz do not scam ​

Answers

The formula for unionized ammonia is NH3. The ionized form of ammonium has the formula NH4+. Water pH is the most important element in determining the amount of ammonia or ammonium in water. Temperature and ionic strength have an impact on ammonia activity.

Would you categorize temperature as an Intensive or extensive property explain plz !!!

Answers

Extensive properties depend on the amount of matter in a sample, While Intensive properties do not depend on the amount of matter in a substance.

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What is the density of a piece of metal with a
mass of 23.5 g and a volume of 11.1 mL? You
will report in units of g/mL. Please answer only
with a number. Include only two decimals in
your answer.

Answers

The density of the piece of metal is 2.12g/mL

HOW TO CALCULATE DENSITY:

Density, which refers to the mass of an object in relation to its volume, can be calculated by dividing mass by volume. That is;

Density (g/mL) = mass (g) ÷ volume (mL)

According to this question, a piece of metal has a mass of 23.5 g and a volume of 11.1 mL, hence, the density can be calculated as follows:

Density = 23.5/11.1

Density = 2.12g/mL

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1. Based on the Law of Conservation of Mass, if
100g of sodium metal reacts with 25g of
chlorine gas, what will be the total mass of the
product, sodium chloride, created in the
chemical reaction?
2 Na Cl2
2NaCl
100gm + 25gm
+
?

Answers

[tex]\boxed{\sf {Na\atop Sodium}+{Cl\atop Chlorine}\longrightarrow {NaCl\atop Sodium Chloride}}[/tex]

Na=100gCl=25g.Mass of reactants :-

[tex]\\ \sf\longmapsto Na+Cl[/tex]

[tex]\\ \sf\longmapsto 100+25[/tex]

[tex]\\ \sf\longmapsto 125g[/tex]

Mass of NaCl=125g

Drag the appropriate answer to the correct location on the concept map below.

Answers

Hey I think you forgot to add the map image, if you can I can help you with it.

5. Which state(s) of matter |s/ar epsilon easily compressible? Select all that apply.
-liquid
-solid
-gas
-none

Answers

Answer:

Gas

Explanation:

The atoms, ions, or molecules that make up the gas are further apart and move freely at high speeds and is can easily be compressible.

Answer:

Gas

Explanation:

A gas is a substance or matter in a state in which it will expand freely to fill the whole of a container' having no shape like a solid and no fixed volume like a liquid.

Convert to standard notation.
9.3 x 10^-5

Answers

Answer:

9.3 x 10^ -5 in standard notation is 0.000093

Explanation:

Since 10 is raised to a -5, this means that there should be 5 zeros before the non-zero digits

What does a virus inject into a cell?

Answers

Answer:

The virus's genome is uncoated from the protein and injected into the host cell.

Explanation:

Help me with this easy chemical change question!!!!

Answers

Answer:

1, just I) color.

Physical properties are the properties that can be observed without changing the composition of a substance, such as color, temperature, density, and boiling point.

A physical change is a change in the substance that only modifies its aggregation state, such as solidification, and boiling.

Chemical properties are the properties that need a reaction to being observed, such as combustibility, which needs a combustion reaction to being quantified.

When a chemical reaction occurs, and the composition of the substance change, it's a chemical change.

So, heating copper with carbon is a chemical reaction, and purification by electrolysis is too. Color is the only physical property.

• 3. Using the following formula Force (N) = mass (kg) x acceleration
(m/s). How is the force of a 50kg being drops at 2m/s^2
o

Answers

Explanation:

Hope it helps.

Thank you


literally anyone pls

Answers

Answer:

0.5851 g/cm3

Explanation:

(45.62) ÷ (4.272)³ = 0.5851

How is the atomic mass of an element determined?

A. by adding the masses of the protons and electrons

B. by adding the masses of the neutrons and electrons

C. by determining the number of protons

D. by adding the masses of the protons, neutrons, and electrons

Answers

Answer:

D

Explanation:

Atomic mass is the total mass of protons, neutrons and electrons of an atom at rest

what is combination reaction give two examples​

Answers

Your answer is in the attachment.

Hope it helps you Please mark me as brainliest.

Describe hydrogen's atomic structure and its molecular structure.

Answers

Explanation:

A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.

Names: hydrogen atom, H-1, protium, ¹H

Protons: 1

Neutrons: 0

Symbol: 1H

Answer:

The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this nucleus.

Explanation:

What is the function of phloem tissue in the plant transport system?
A.it prepares food
B.it transports food
C.it transports water
D.it provides support

Answers

Answer:

option B is the right answer it helps in transfer of food.

How do double replacement reactions relate to Combustion reactions

Answers

Explanation:

A single-replacement reaction replaces one element for another in a compound.

A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.

A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate.

Solubility rules are used to predict whether some double-replacement reactions will occur.

The phenomenon where an electric current is produced by shining a light on a metal plate is called the ________ effect. The minimum frequency required to cause to flow is called the ________ frequency. This frequency depends on the identity of the metal used.

Answers

Answer:

Photoelectric, Threshold

Explanation:

Your welcome

MAY SOMEONE HELP ME PLZZ

A tire company wants to determine what kind of rubber will last the longest for their tires. What are some variables that the researchers will want to make controlled variables?

Answers

Answer: Rubber source, temperature, thinkness, thread design, driving pattenrs, weather, etc.

Explanation: There are many variables. Here are a few I would include in a tire lifetime study:

1. Type of rubber, including source

2. Thickness of tire

3. Design of tire thread

4. Life as a function of average speed and road surface

5. Expected outside temperature and wet conditions

6. Driving conditions of speed and both acceleration and deceleration parameters (e.g., tire life when slamming on the brakes or accelerating quickly)

What should a prepositional phrase include after the preposition?

A.a noun and its modifiers

B.an adjective and an adverb

C.a subject and a predicate

D.an object and its modifiers

Answers

Answer:

B

Explanation:

A prepositional phrase should include after the preposition an object and its modifiers. The correct option is D.

What are prepositional phrases?

A prepositional phrase is a group of words that contain a preposition with its object and the words that modify it. These are the words that change verbs and nouns.

For example, Mansi is going out with handsome Brian. Brian is the object and the beautiful is the prepositional phrase. The three types of prepositional phrases are:

Adverb prepositional phrases.Adjective prepositional phrases.Prepositional phrases, behave as nouns.

If there are two prepositional phrases used in one sentence. The other prepositional phrase will be used as an adverb.

Thus, the correct option is D. an object and its modifiers.

To learn more about prepositional phrases, refer to the link:

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GIVING 20 POINTS!! Apply Concepts Two chemists each plan an investigation in which they will combine hydrogen gas with chlorine gas to observe the chemical reactivity. The plans differ in that one will use 25 milligrams each of hydrogen and chlorine, and the other will use 1000 times this amount, i.e., 25 grams each of hydrogen and chlorine. Can the investigations reach similar conclusions about the reactivity of hydrogen with chlorine? Explain.

Answers

Answer:

Yes, the investigations will reach similar conclusions about the reactivity of H2 and Cl2

Explanation:

1. The law of multiple proportions says that when elements form compounds, the proportions of the elements in those chemical compounds can be expressed in small whole number ratios.  This means that regardless of whether 1000 times more of the products are used, the reactivity of the products is established by the chemical reaction

2. The law of multiple proportions is an extension of the law of definite composition, which states that compounds will consist of defined ratios of elements.

3. A reaction with more reactants will need more care because more products are produced, which can be toxic

4. H2 and Cl2 reactivity does not depend on the quantities but the chemical properties of each compound

Write a word equation for the chemical reaction.

I’ll brainlist.

Answers

Answer:

potassium hydroxide + sulfuric acid → potassium sulfate + water.

Explanation:

Hope it helps.. if yes, plz mark me as brainliest

Which statement describes a numerical result with good precision?

Answers

Answer:

poop

Explanation:

if you have observed something about the world and want to investigate it further, what are you seeking to do?

Answers

I'm seeking to ASK A QUESTION in accordance to the scientific method.

WHAT IS SCIENTIFIC METHOD:

Scientific method is the step by step procedure employed by scientists in order to investigate an occurrence or phenomenon in the world.

The steps involved in the scientific method, which begins with making an observation, are as follows:

Make an observation

Ask a question based on the observation

Formulate a hypothesis

Test the hypothesis via experimentation

Analyze result data

Draw conclusion

According to this question, after observing something about the world and I want to investigate it further by asking a question as the next step.

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What is the density of water (in g/mL) to fouf significant figures at 6°C?

Answers

Answer :

0.9999432 g/cm^3

The density of water in g/ml up to 4 significant figures at 6°C is 0.9999432 g/cm³.

What are significant figures?

Significant figures are used for establishment  of a number which is presented in the form of digits. These digits give a meaningful representation  to the numbers.

The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.There are rules for counting significant figures which are as follows:

1)All non-zero digits are significant .

2)All zeroes which occur between non-zero digits are significant.

3)All zeroes to the left and right of  a non-zero digit are not significant.

4) All zeroes on right  of decimal are significant if a non-zero number follows them.

5)All zeroes on right side of non-zero digit are significant

Learn more about significant figures,here:

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Which of the following is NOT a pure substance?
а.
b.
C.
d.

Answers

Answer:

lol where is your questions??

Which is larger?
1). 1 liter or 1500 milliliters
2) 12 cm or 12 milliliters

Answers

Answer:

1). 1 litre

2).12 cm

Explanation:

In 1 litre = 1000 ml whereas 1500 milliliters equals 0.15 litres and it is same for 12 cm and 12 milliliters

Cuales son los elementos (de la tabla periodica) que contienen los seres inertes (minerales)

Osea por ejemplo las piedras, el agua, la tierra, cuales son los elementos del universo que conforman cosas no-vivas?

Answers

I’m just doing this so i can ask a question

what will happen to the atoms or sbstance when it is condenses​

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Condensation happens when molecules in a gas cool down. As the molecules lose heat, they lose energy and slow down. They move closer to other gas molecules. Finally these molecules collect together to form a liquid.

Hope it helps!

Brainliest pls!

Follow me! :)

Balancing oxidation-reduction reactions
Mg+ N2—>Mg3N2

Answers

Answer:

[tex]{ \sf{3Mg_{(s)} + N_{2(g)} →Mg _{3}N_{2(s)}}}[/tex]

600mL of a gas at 27◦C and 1atm pressure is heated to 177◦C. What pressure Must be applied to the gas in order to maintain the same volume?​

Answers

Answer:

gkfbhs DC hdshgagfzh

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