What is the molarity when 500mL H2O is added to 20mL 6.0M HNO3?

Answers

Answer 1

Answer:

50.00-mL volumetric flask and diluted to the mark with water. What is the molarity of the new solution? 12. 30.00 mL of water is added to 20.00 mL of 0.0500

Explanation:

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Related Questions

How do you balance C4H10 + Cl2 + O2 —> CO2 + CCl4 + H2O?

Answers

Answer:

4C4HO + 4Cl2 + 13O2 → 14CO2 + 2CCl4 + 2H2O

Explanation:

Balance The Equation: C4HO + Cl2 + O2 = CO2 + CCl4 + H2O

1. Label Each Compound With a Variable

  aC4HO + bCl2 + cO2 = dCO2 + fCCl4 + gH2O

2. Create a System of Equations, One Per Element

  C: 4a + 0b + 0c = 1d + 1f + 0g

  H: 1a + 0b + 0c = 0d + 0f + 2g

  O: 1a + 0b + 2c = 2d + 0f + 1g

  Cl: 0a + 2b + 0c = 0d + 4f + 0g

3. Solve For All Variables

  a = 4

  b = 4

  c = 13

  d = 14

  f = 2

  g = 2

4. Substitute and Verify Result

  4C4HO + 4Cl2 + 13O2 = 14CO2 + 2CCl4 + 2H2O

      L R

  C: 16 16 ✔️

  H: 4 4 ✔️

  O: 30 30 ✔️

  Cl: 8 8 ✔️

hope this helps! :D

why do atoms get smaller as you move across a period

Answers

Neutral atoms get smaller as you move across the periodic table from (left to right) because the atom increases in electrons. The more electrons, the bigger the effective nuclear charge (electron and proton attraction) and so basically the atom shrinks.

help me please i dont understand

Answers

Answer:

1. Dissolving powder in milk - Chemical

  - It is chemical because the milk has changed on a molecular level

2. Toasting bread - Chemical

   - It is chemical because adding heat to the bread cooks it, therefore

     changing it on a molecular level

3. Melting cheese - Physical

   - It is physical because the physical appearance was the only change

4. Slicing apples or bannanas - Physical

   - It is physical because the physical appearance was the only change

5. Frying an egg - Chemical

   - It is chemical because new particles were formed

6. Milk souring - Chemical

   -  It is chemical because it is forming a new product (lactic acid)

Explanation:

Physical Change occurs when the particles of a substance become rearranged, but do not change into different particles.  

Chemical change occurs when a new substance is formed. This process is irreversable.

Answer:

give the preson above brainly bc there right

Explanation:

Analyze the reaction of solid magnesium and water. Which pair of reactants and products in the table below represent the correct balanced equation for the reaction?

Answers

Answer:

3 is correct answer I think

Explanation:

Labor unions arose in the nineteenth century as increasing numbers of Americans took jobs in factories, mines, and mills in the growing industrial economy.

The Knights of Labor, founded in 1869, was the first major labor organization in the United States. The Knights organized unskilled and skilled workers, campaigned for an eight hour workday, and aspired to form a cooperative society in which laborers owned the industries in which they worked.

The Knights’ membership collapsed following the 1886 Haymarket Square riot in Chicago. By 1886 the American Federation of Labor (AFL), an alliance of skilled workers’ trade unions, was growing.

CORRECT ANSWER WILL GET BRAINLIEST

Is the following nuclear equation balanced?
A. yes
B. no

Answers

Answer: B. no

Explanation:

The answer is no!! hope this helps :)

Which description is not a property of an acid?
1. Slimy feel
2. Corrosive
3. Sour taste
4. Dissolves metals

Answers

Answer:

Slimy Feel

Explanation:

Acid usually doesn't have a Slimy Feel to it.

Acids don’t have a slimy feel

The____ is the basic unit of life

Answers

Answer:

cell

Explanation:

Cells are the most simple, basic units of life

Answer:

the CELL is the basic unit of life.

Explanation:

I had this is my science lesson

have a great day!

hope this helps!

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1. Why are the world’s rainforests so important?




2. Predict solutions for slowing the loss of biodiversity.



3. Describe three ways humans are contributing to the loss of biodiversity.





4. How does the introduction of invasive, non-native species, threaten biodiversity?

Answers

Answer:

1.

Rainforests are important due to the amount of oxygen the tree's produce. It also adds biodiversity and more balance in the food chain of animals.

2.

If we slowed transportation and agricultural farming, greenhouse gases and carbon monoxide would be reduced magnificently.

3.

One way is that Humans are supplying demand for animal agriculture for food (when not need to). The greenhouse gases created by the factories alone are creating much of the ozone's destruction. Also, another reaction to demand of meat is, The space needed for farmland. They burn down much of the rainforest for farmland and grass for the cows and other animals. Thirdly, traveling alone and having many household luxuries aren't helping either. Lowering the use of composite resources and more wind, solar, and water energy can help the earth in total.

4.

Introducing invasive species endangers many of the other species. They could have a advantage or disadvantage over the other species. causing either over, or under, population for many of the species. Throwing the balance of it all off.

two samples of solids have similar reactivity with acids and similar densities. their masses and volumes, however, are not at all similar. is it possible that these are the same substance?

Answers

Given that the volume and mass of a substance are not defining properties, it is entirely possible for two samples with different volumes and mass to be the same substance.

What are defining properties of a substance?These are properties that can help us to identify a substance. The most useful of which tend to be chemical properties such as reactiveness or melting points. Colors and density can also offer the insight needed to identify elements and substances. Mass and volume are not properties of a substance given that they can change often depending on the sample size and thus do not help to identify a substance.

Therefore, since the volume and mass of a substance are not defining properties of a substance, we can confirm that it is entirely possible for two samples with different volumes and mass to be the same substance.

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2. Write down the position of alkaline earth metal in the Modern periodic table What is their valency? ​

Answers

Answer:

they are in group II and they have two electrons in their outermost energy levels ( valency)...is this helpful?

a vessel contains 66 g co2 and 16 g o2 at a pressure of 10.0 atm. what is the partial pressure of co2?

Answers

This question is providing the masses of carbon dioxide and oxygen gases at 10.0 atm as 66 g and 16 g respectively, and is asking for the partial pressure of the former which turns out to be 7.50 atm after doing the math.

Thus, we can start solving this problem with the Dalton's law approach, in order to make a relationship for the total pressure, partial pressure and mole fraction, which means we must first determine the mole fraction of carbon dioxide gas in the mixture as shown below:

[tex]x_{CO_2}=\frac{n_{CO_2}}{n_{CO_2}+n_{O_2}}[/tex]

Next, we calculate the moles of both gases by dividing the grams over the molar masses:

[tex]n_{CO_2}=\frac{66g}{44.01g/mol} =1.50mol\\\\n_{O_2}=\frac{16g}{32g/mol} =0.5mol[/tex]

Then, the mole fraction of carbon dioxide as the required one by plugging in the previously calculated moles:

[tex]x_{CO_2}=\frac{1.5}{1.5+0.5}=0.75[/tex]

Finally, we use the definition of the Dalton's law to calculate the partial pressure of carbon dioxide gas in the binary mixture:

[tex]P_{CO_2}=x_{CO_2}P\\\\P_{CO_2}=0.75*10.0atm\\\\P_{CO_2}=7.50 atm[/tex]

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Which of the following outcomes is a benefit of conventional agriculture?

Answers

Answer:

Preserving soil, water and energy resources has enabled modern farming to grow food sustainably on the same land for more than 100 years. ... Modern, conventional agriculture has key sustainability benefits in terms of land use, reduced soil erosion and water protection.

Explanation:

hope it helps you

Can someone help me please

Answers

Answer: The correct pairs of elements likely to form ionic compounds are, potassium and sulfur, magnesium and chlorine. The answer is argon please give me brainlist

Explanation:

Why is the molecule not an example of a cis stereoisomer

Answers

Answer:

Because in order to have cis or trans configuration both carbon of alkene need to have a hydrogen

1. Why do you think the map is labeled "Three Sisters”?

also, i know this isn’t chemistry but i couldn’t find Earth Science so don’t come for me . i would appreciate it if y’all could help me the best you can!

Answers

Answer:

It's called the “The Three Sisters” because it comes from an Iroquois legend. The Legend says corn, beans and squash are inseparable sisters that were given to the people by the “Great Spirit.” It is important to note, however, that the “Three sisters” are also found in many other areas and tribes around North America.

2. Use the graph below to answer the following questions.
Does this graph represent an endothermic or an exothermic reaction?

How do you know this graph represents that type of reaction?

What is the potential energy of the reactants (PEreactants)?

What is the potential energy of the products (PEproducts)?

What is ΔH of the reaction?
REMEMBER: ΔH = PEproducts - PEreactants

What is the activation energy (Ea) of this reaction?
REMEMBER: Activation Energy = Maximum Energy - PEreactants

Answers

Answer:

The graph represents an endothermic reaction.

The products have more energy than the reactants.

80kJ

160kJ

80kJ

160kJ

The given graph is representing an endothermic reaction as the potential energy reactants are lower than that of the products.

ΔH of the reaction and activation energy is 80 KJ and 160 KJ respectively.

What is the endothermic process?

An endothermic process can be defined as a process with an increase in the enthalpy H of the system. An endothermic process involves an increase in the temperature of the system.

Whether a process occurs spontaneously depends not just on the enthalpy change but also on the entropy change and temperature.

From the graph, the potential energy of the reactants = 80 KJ

The potential energy of the products = 160 KJ

ΔH of the reaction, ΔH = PE(products) - PE(reactants)

ΔH = 160 -80 = 80 KJ

The activation energy (Ea) of this reaction will be:

Activation Energy (Ea) = Maximum Energy - PE(reactants)

Activation Energy = 240 - 80 = 160 KJ

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why do the copper square, penny, and the statue of Liberty all soluble in water?

Answers

Answer:

It’s because of the green substance on the copper square, pennies and the Statue of Liberty giving those objects the ability to all be soluble in water.

is the transfer of heat from one object to another by direct contact. Which materials conduct heat most easily?

Answers

Answer:

Conduction is the transfer of heat between substances that are in direct contact with each other. Explanation:The better the conductor, the more rapidly heat will be transferred. Metal is a good conduction of heat. Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more.

A Herbig-Haro (HH) object is:_:_________.
a. a small galaxy just outside the outer edge of the Milky Way
b. where a jet from a star in the process of being born collides with (and lights up) a nearby cloud of interstellar matter
c. a part of a giant molecular cloud where molecules containing two hydrogen atoms form
d. a star that has too little mass to start fusion in its core
e. cluster of very low-mass stars, observable only with infrared radiation

Answers

Given what we know about Herbig-Haro (HH) objects, we can confirm that they are born from the collision between a jet from a star and clouds of interstellar matter.

What are Herbig-Haro (HH) objects?To put it simply, a Herbig-Haro (HH) object is what we observe as a bright spot in distant space. Upon closer observation we can observe that these giant bright patches are not lone objects, but in fact immense groups of interstellar matter.

How Herbig-Haro (HH) objects are formed.The formation of one of these interstellar groups requires an immense amount of energy. This energy come from the speed at which the materials that form these objects collide.As stated in the question, the jet released from a star in the process of being born smashes into a giant cloud of dust and interstellar material to form the Herbig-Haro (HH) objects. This collision happens at hundreds of km/s. To put it into perspective, it would be roughly 500,000 miles per hour.

Therefore, we can confirm that option b, which states, "where a jet from a star in the process of being born collides with (and lights up) a nearby cloud of interstellar matter", is the correct choice for the question pertaining to Herbig-Haro (HH) objects.

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Which of the compounds in the table below is listed in the wrong colum?

Answers

Answer: C

Explanation: This is because of a nice thing called guessing

how do I know which substance is being reduced? ​

Answers

when an atoms oxidation number decreases in a reaction then it’s being reduced. the answer for that question is B

15. Which reaction produces a coloured substance?
A. The addition of sodium metal to water.
B. The addition of sulfur dioxide gas to water.
C. Burning sodium metal in chlorine gas.
D. The addition of chlorine gas to a solution of potassium iodide.

Answers

Answer:

the addition of chlorine gas to a solution of potassium iodide.

The reaction that produces a colored substance is the addition of chlorine gas to a solution of potassium iodide. The correct option is D.

What is a chemical reaction?

In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy.

Another sign that a chemical reaction has taken place is a change in color. If two solutions are combined and a color change occurs that is not just the effect of diluting one of the reactant solutions, a reaction has taken place. A solid and a liquid combined may also result in a change in color.

Therefore, the correct option is D. The addition of chlorine gas to a solution of potassium iodide.

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Hey can anyone pls answer dis in ur own wordssss

Answers

Answer: sorry

Explanation:

j

1. Atomic mass of 12 and 6 neutrons what is the atomic number?

Answers

Answer:

The atomic number would be 12.

Explanation:

A neutral atom of Carbon-12 contains six protons, six neutrons, and six electrons.

an atom has 10 protons and a mass number of 18 how many neutrons does it contain

Answers

Answer:

8 i believe

Explanation:

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the number of neutrons in the given atom is 8.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

Mass number =number of protons + number of neutrons

Atomic number = number of protons= number of electrons

18  =10 + number of neutrons

number of neutrons=8

Therefore, the number of neutrons in the given atom is 8.

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A penny is 0.061 inches thick. What is the value of the 6 in the thickness of a penny? Mathematics not chemistry

Answers

Answer:

because of the location of the 6 the answer is 6 cent

Answer:

Hundredths

Explanation:

$6 times 1/$100. The 0 is tenths, the 6 is hundredths and the 1 is thousandths.

28) what is the number of oxygen atoms in the formula unit of Ca3(PO4)2?​

Answers

Answer:

4.816x10²⁴atoms

Explanation:

the number of moles of oxygen is 8

let x be number of oxygen atoms

recall that 1 mole=6.02x10^23 atoms

therefore, 8 moles =x

cross multiply

8 x 6.02 x 10^23 = x

x = 4.816 x 10²⁴atoms

FOR THE LOVE OF GOD SOMEONE PLEASE HELP ME
WHAT IS THE OXIDATION NUMBER OF THE S IN SO^-2 ???

Answers

Answer:

The oxidation number for sulfur in SO2 is +4.

Explanation:

To find the oxidation number of sulfur, it is simply a matter of using the formula SO2 and writing the oxidation numbers as S = (x) and O2 = 2(-2) = -4. Using the rule and adding the oxidation numbers in the compound, the equation becomes x +(-4 ) = 0. Solving for x, it is evident that the oxidation number for sulfur is +4.

How long does it take an object to travel 50m at a rate of 8 m/s?

Answers

Answer:

6.25s

Explanation:

time = distance / speed

time = 50 / 8

time = 6.25s

Will Mark Branliest!

How many grams are in 4.1 mole sample of CO?

Answers

4.1 Moles of Cobalt = 241.62612 Grams
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