Chemistry High School

What is the name of the colony shown?

Answers

Answer 1

Answer: New Hampshire

Explanation:

If it is the dark green then its New Hampshire :)

Answer 2

Answer:

New Hampshire ;)

Explanation:

New Hampshire is the dark green state on this map, and it is apart of the first 13 colony I hope that helped.

Related Questions

In a laboratory experiment, you perform the above reaction. However, you only get 7.50g of Al. What was the percent yield of that experiment?

Answers

Answer:

Explanation:

n a laboratory experiment, you perform the above reaction. However, you only get 7.50g of Al. What was the percent yield of that experiment?

(need help asap)
How much of each reactant(zinc and hydrochloric acid) is needed to produce 150 grams of hydrogen gas

Answers

Explanation:

150 grams is .15 liters

1 mole of gas at STP occupies 22.414 liters

.15 liter of hydrogen represents .15/22.414 =

0.0066922 moles of H2

equation is

Zn + 2HCl → ZnCl2 + H2

1 mole of Zn will make 1 mole of H2

0.0066922 moles of Zn will make 0.0066922 moles of H2

To convert this molar quantity of zinc into grams we simply multiply by the atomic mass of zinc, which is

65.38 g/mol;-

Mass of Zn required = 0.0066922 moles * 65.38 g/mol = 0.4375390381 grams

https://www.quora.com/How-many-grams-of-Zinc-would-you-need-to-react-with-Hydrochloric-acid-to-produce-1-L-of-H2-gas

Why are fat layers and thick white fur advantageous for polar bears?
Group of answer choices

A. They insulate the bears and allow them to blend in with their environment.

B. They help the bears get rid of excess body heat more readily.

C. They help bears hibernate longer.

D. They allow the bears to run and swim faster to escape predators.

Answers

Answer:

A. They insulate the bears and allow them to blend in with their environment

Soil is conserved from erosion to

Answers

Answer:

keep it from being washed away by water

what is the volume of 15.0 g of ice
A. 7.5
B. 13.8
C. 15.0
D. 16.3

Answers

When we convert 15 g of ice to volume in milliliters (mL), the result obtained is 15 mL (option C)

Conversion scale

1 g = 1 mL

How to convert 15 g to mL

1 g is equivalent to 1 mL.

Therefore,

15 g will also be equivalent to 15 mL

Thus,

15 g = 15 mL

The correct answer to the question is 15 (Option C)

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Pure N2 in a flask has a pressure of 1.0 atm. If O2 gas is added until the number of molecules of O2 is twice as that of N2. What is the total pressure of the flask

Answers

The total pressure of gasses (nitrogen and oxygen) in the flask is determined as 3 atm.

Balanced chemical equation of N2 and O2

The balanced chemical equation of nitrogen gas and oxygen gas is determined as follows;

N₂ + 2O₂ → 2NO₂

PV = nRT

Pressure is directly proportional to number of moles

P(total) = P(N₂) + PO₂

P(total) = 1 atm + 2(1 atm)

P(total) = 3 atm

Thus, the total pressure of gasses (nitrogen and oxygen) in the flask is determined as 3 atm.

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The fact that water is attracted to itself, a property called:.

Answers

Answer Water is also attracted to itself, a property called cohesion

Everything in the world is made of matter except you??

TrueFalse

Answers

Answer:

False.

Explanation:

Humans are made of matter too :)

What would happen if the student did not stop the development before the solvent reached the top of the paper

Answers

Answer:

The solvent would wash away the dye.

Explanation:

The solution will m ove to the top and you would not be able to calculate the Rf value that is com pared to the distance that a com ponent traveled in the stationary phase reached by the solvent.

Answer:

The solvent would wash away the dye.

Explanation:

The solution will m ove to the top and you would not be able to calculate the Rf value that is com pared to the distance that a com ponent traveled in the stationary phase reached by the solvent.

in need of some help with this question please~

when 4g of oxygen gas reacts with excess of hydrogen gas, the volume of water vapour produced at (STP) is ....... L ( H = 1 , O = 16).

a) 22.4
b) 44.8
c) 11.2
d) 5.6

an explanation would be great for future reference <3 thank you in advance!

Answers

Answer:

5.60 Liters at STP

Explanation:

First you need the balanced reaction equation

2 H2 + O2 ====> 2 H2O

4 g of oxygen ( O2 ) is 4/(15.999*2) moles of O2 (using periodic table)

Twice the number of moles of H2O re produced (from equation)

at STP the volume of a mole of gas is 22.4 liter/ mole

put all of this together

2 * 4 / (15.999*2) moles * 22.4 L/mole = 5.60 L

What volume (in mL) of 0.750 M sodium hydroxide is needed to neutralize (react with) 275 ml of 0.500 M sulfuric acid (H2SO4)?
NaOH + H2SO4 -> H2O + Na2SO4
I NEED WORK

Answers

We know the formula

C1V1=C2V2

C is concentration and V is volume

0.750V1=275(0.5)0.75V1=137.5V1=183.34mL

The new volume will be by using the relation between molarity and volume formula.

What is molarity?

Molarity, also termed as molar concentration in a solution, is a method of determining how much material is present in a chemical solution.

Calculation of volume with the aid of molarity formula is shown below:

Volume is calculated by using the molarity formula.

[tex]M_{1} V_{1} = M_{2} V_{2}[/tex]

Where, M is molarity and V is volume.

It is given that, [tex]M_{1}[/tex] = 0.750 M , [tex]M_{2}[/tex] = 0.500 M, [tex]V_{1}[/tex] = 275 ml .

Now, put the value of given data in molarity formula.

[tex]M_{1} V_{1} = M_{2} V_{2}\\V_{2} = M_{1} V_{1} / M_{2}\\V_{2} = (0.750 M) (275 ml) / 0.500 M\\V_{2} = 183.34 ml[/tex]

Therefore, the volume will be 183.34 ml.

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I NEED HELP ASAP!!!!!!!!!!!!
WITHIN THE HOUR
Thanks

Answers

A. an ionic bond dslslslslsks

In order to be healthy, humans must consume a variety of amino acids. any animal product, such as eggs, milk, and meat, contains all of these amino acids. however, consumption of a wide variety of plant products will also supply the necessary amino acids. describe two different meals you could enjoy that contain only plant products. make sure to include at least five different plants in each meal. (10 points) plants produce grains, vegetables, and fruits. meal two

Answers

Dish of Cabbage, carrot, pea, cauliflower and brinjal are the meals we could enjoy that contain only plant products.

Describe two different meals you could enjoy that contain only plant products?

Cabbage, carrot, pea, cauliflower and brinjal are the five different plants based meals. In these meals, vegetables are used which are the parts of plant. We know that vegetables are very healthy and nutritive which can be get from plants.

So we can conclude that dish of Cabbage, carrot, pea, cauliflower and brinjal are the meals we could enjoy that contain only plant products.

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5. Why does temperature go down when you remove CO2?

Answers

Answer:

It is harmful gas which cause global warming

Lewis dot structure for H2CCCl2?

Answers

Answer:

Explanation:

lewis dot structure:

Carbon has 4 valence electrons and hydrogen has 1 electron. Therefore, in below given way, the lewis dot structure for H[tex]_2[/tex]CCCl[tex]_2[/tex] can be drawn.

What is Lewis dot structure?

These illustrations, commonly referred to as lewis structures and electron dot structures, show how electrons are distributed and grouped around atoms.

You must be aware of the total amount of valence electron cloud in order to create the Lewis structure. Based on the atom's group number inside the periodic table, it is possible to determine how many valence electrons are present in a certain atom. Carbon has 4 valence electrons and hydrogen has 1 electron. The lewis dot structure for H[tex]_2[/tex]CCCl[tex]_2[/tex] is given below.

Therefore, in above given way, the lewis dot structure for H[tex]_2[/tex]CCCl[tex]_2[/tex] can be drawn.

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lead ions and magnesium ions both have a charge of 2+. predict the ionic equation for this reaction.

Answers

Answer:
PbMg

Explanation:
Because they both have a charge of 2+, they can be reduced and cancel each other out because 2 and 2 can be reduced to 1

As both the ions have charge of +2 the compound formed is PbMg as the like charges will cancel out each other.

What are ions?

An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.

Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.Ions of opposite charges combine in ionic compounds.

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fossil fuel in a sentence
biomass in a snentence

Answers

Answer:

Below•

Explanation:

Fossil Fuel: It's a natural gas based on natural materials such as coal.

Biomass: It's the total weight of substance.

[tex] \qquad \qquad...[/tex]

A canister has a fixed volume. If the pressure of the cannister is 1.5 atm at 25 Celsius, what is the new pressure if the temperature rises to 75 degrees Celsius?

a) 4.5 atm
b) 1.6 atm
c) 1.3 atm
d) 1.8 atm

Answers

Answer:

d) 1.8 atm

Explanation:

According to Boyle's Law,

P₁/T₁ = P₂/T₂

Here, we are given :

P₁ = 1.5 atmT₁ = 25°C = 298 KT₂ = 75°C = 348 K

Solving

P₂ = P₁T₂/T₁P₂ = 1.5 x 348 / 298P₂ = 522/298P₂ = 1.8 atm (approximately)

what are the molecular structure,structural formula and strength of intermolecular forces for the substances methylated spirits,Acetone,water,glycerine and oil?

Answers

Answer:

Glycerine, water and methylated spirits have hydrogen bonds between the molecules. However, in water and Glycerine these intermolecular forces are very strong while in the methylated spirits they are slightly weaker. This leads to the higher boiling point for water and Glycerine.

Explanation:

In chemistry a molecular formula indicates every single atom and its numbers in a chemical compound. Hence the molecular formula C3H8O3 simply says that there are three carbon (C) atoms, eight hydrogen (H) atoms and three oxygen (O) atoms in this compound.

2. Observe Examine the flame closely. Is it the wax or the wick that burns?

Answers

Answer:

Wax

Explanation:

The combustible material in a candle or its fuel is wax. Before the wax can become fuel, it first needs to get hot enough. To start that heating process, you first need to light the wick with another source of fire, such as a match. As the wick burns down the heat of the flame melts the wax around the wick.

when 949 J of heat is added to 9 grams of oil at 37˚C , the temperature increases to 62˚C. What is the specific heat of the oil?

Answers

Answer:

4.21778 J/(g*C)

Explanation:

specific heat = joules / (mass times temperature change)

949 / (9 times 25)

949 / 225 =

4.21778

Kiera and Grace are sisters. They both have blue eyes. Kiera is extremely short for her age and Grace is exceptionally tall for her age. Develop a hypothesis as to why the sisters have different statures. Justify your hypothesis in two or more complete sentences.

Answers

The hypothesis as to why the sisters have different statures occurs because from genetics we know that it is linked to the alleles so one sister is shorter than the other one was they had different alleles.

What is the genetic similarity between siblings?

On average, siblings share about 50% of their DNA with each other, but some siblings share even more and some less. So while we all have approximately 50% DNA from each parent, the segments we end up getting are completely random.

Hereditary character or gene that is manifested by the absence of the opposite gene, called dominant, in this case, Kiera is extremely short for her age.

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Sulfuric acid can dissociate into _______ ions and hydrogen ions which lowers the ph causing acidic environments that are very harmful to many ecosystems.

Answers

Sulfuric acid can dissociate into hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−).

Does sulfuric acid dissociate or ionize?

Sulfuric acid is a very strong acid which ionizes into hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−) while on the other hand, in dilute solutions the hydrogen sulfate ions also dissociate, forming more hydronium ions and sulfate ions (SO42−).

So we can conclude that Sulfuric acid can dissociate into hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−).

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What is the largest possible electronegativity difference for a bond to be covalent?

A.
0.5

B.
1.7

C.
0.0

D.
1.0

Answers

Covalent bonding is the sharing of electrons between atoms. The electronegativity difference of 1.7 is the largest for a bond to be covalent. Thus, option B is accurate.

What is the electronegativity difference?

The electronegativity difference is the parameter used to determine the polarity and the type of the bond formed by the atom of the species. it gives the measure of the atom to attract the shared electrons.

For a covalent bond to form the electronegativity difference between the two atoms of the molecules must be less than 2. A difference of more than 2 results in ionic bond formation.

Therefore, option B. 1.7 is the highest electronegativity difference for a covalent bond formation.

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Does the size of the nucleus affect the possibility of nuclear fission or fusion happening?

Answers

Yes

In an atom you have protons and neutrons in the nucleus. If you have a large nucleus w a high number of protons you have a lot of neutrons. Neutrons must be touching a proton so that they don’t go through beta minus decay. But when atoms get bigger the strong force that keeps the protons together gets too far apart. A neutron has to be touching a proton for it to be stable. When the nucleus size increases there is a too high of ratio of neutrons to protons and the neutrons go through beta minus decay due to the weak force.

If you have a small nucleus like helium you have two protons and two neutrons and the ratio is stable so in extremely high pressures and temperatures like on the sun those particles go through fusion.

Uranium has a large nucleus and the ratio of neutrons to protons is unstable and it will therefore go through fission.

Identify the molecular shape of each lewis structure. bent tetrahedral trigonal planar trigonal pyramidal

Answers

Identify the molecular shape of each lewis structure we have that:

1. Trigonal pyramidal

2. Tetrahedral

3. Trigonal planar

4. Bent

What is Lewis structure?

For an understanding through pictures of the location of electrons in an atom, we represent electrons as dots around the element symbol. The number of electrons available for bonding is indicated by unpaired dots. These symbols are called Lewis symbols.

The Lewis structure shows the formation of bonds in a molecule, as well as the atoms involved and the valence electrons of each of them, in this case was Trigonal pyramidal; Tetrahedral; Trigonal planar; Bent.

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When would a transformation of chemical energy to electrical energy occur?

A. when the current becomes zero

B. when a reaction produces the same products

C. when electrons stop moving between atoms

D. when there is chemical reaction between metals and nonmetals

I think that the answer MAY be D..............but I don't know.