Chemistry High School

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Answers

Answer 1

Answer:

I believe the ans is 3- ethyl pentane

Related Questions

How many moles of oxygen gas are necessary to completely react with 10.6 moles of propane? C3H8(g) + 5 O2(g) --> 3 CO2 (g) + 4 H2O (l)

Answers

Answer:

53 moles of oxygen, O₂

Explanation:

The chemical equation for the reaction is presented as follows;

C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O (i)

From the above equation, 5 moles of oxygen, O₂, gas reacts completely with 1 mole of propane gas, C₃H₈

Therefore 10.6 × 5 = 53 moles of oxygen, O₂, will be required to react with 10.6 × 1 mole of propane, C₃H₈

The number of moles of oxygen, O₂, necessary to completely react with 10.6 moles of propane, C₃H₈ is 53 moles of oxygen, O₂

The ____ are a windless zone.

Answers

doldrums................

Answer:

sorry I don't know  I just came for points

Explanation:

Balance the following chemical reaction:
NaF +
Br₂
NaBr +
F2
O A. 3,1,2,1
OB. 1,2,3,4
OC. 2,1,2,1
O D. 1,2,1,2

Answers

Answer:

what the freak is thisnenejehey

To balance the reaction what coefficients (numbers) are needed: HBr +KOH ---> KBr + H2O

Answers

Answer:

H2Br + 2KOH ----- K2Br + 2H2O

plz help me get this right and no links

Answers

Answer:

Outer planets are significantly colder than other planets! The answer is B.

Explanation:

The main difference between inner and outer planets is that inner planets have a high temperature compared to outer planets.

Please help this is due soon

Answers

it’s b use the formula
It’s b 20g/cm3 I hope this helps

How can we use patterns on the periodic table to predict an element’s structure and reactivity?

Answers

Answer:

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

Turtles are cold blooded, meaning they use the Sun to keep warm. A student hypothesizes that his pet turtle will prefer swimming in warm water. He places his turtle on a rock in the middle of the bathtub, and measures how much time the turtle spends off of the rock during a five minute period. He conducts the experiment under four conditions in the bathtub: no water, warm water, cool water , and room temperature water. In this experiment, which is the control group ?

Answers

Answer:

Room temperature water

Explanation:

Neither the amount of water nor the temperature of the water has been changed.

Na+ and P-3 whats the formula and whats the name of it

Answers

Answer:

Sodium phosphide is the inorganic compound with the formula Na 3 P. It is a black solid. It is often described as Na + salt of the P 3− anion. Na 3 P is a source of the highly reactive phosphide anion.

Explanation:

Aqueous aluminum phosphate reacts with solid magnesium to produce solid aluminum and aqueous magnesium phosphate. Write the balanced chemical equation for this chemical reaction using the correct chemical formulas and include conditions (s, l, g, or aq). Put your answer in the box below.

Answers

Answer:

2AlPO4(aq) + 3Mg(s) -------> Mg3(PO4)2(aq) + 2Al(s)

Explanation:

The principle of writing balanced chemical reaction equations states that; the number of atoms of each element on the right hand side of the reaction equation must be equal to the number of atoms of the same element on the left hand side of the reaction equation.

The reaction is between aqueous aluminum phosphate reacts and solid magnesium to produce solid aluminum and aqueous magnesium phosphate. The equation is represented as follows;

2AlPO4(aq) + 3Mg(s) -------> Mg3(PO4)2(aq) + 2Al(s)

If Darian contains 3.25 moles of gas in a container with a volume of 60.5 liters and at a temperature of 400 K, what is the pressure inside the container?
PV = nRT


with atm: R = 0.0821 L*atm/(K*mol) with kPa: R =8.31 L*kPa /(K*mole)

Answers

Answer:

1.76atm

Explanation:

Using the ideal gas law equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information provided in this question,

P = ?

V = 60.5 liters

n = 3.25 moles

T = 400 K

R = 0.0821 Latm/molK

Using PV = nRT

P = nRT/V

P = (3.25 × 0.0821 × 400) ÷ 60.5

P = 106.73 ÷ 60.5

P = 1.76atm

H2 + O2 + H2O how do I balance this?

Answers

Explanation:

[tex]2H _{2(g)} + O _{2(g)}→2H _{2}O _{(l)}[/tex]

Insert 2 on Hydrogen then a 2 on water molecule.

You field fugitive rhebeif with

Define ,'Toxic'.
Ty!!​

Answers

Answer:

Toxic is a harmful chemical substances which degrades the quality of pure substance .

Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)

Use the equation above to determine the number of grams of magnesium chloride, MgCl2 , that can be produced if 4.00 moles of HCl (hydrochloric acid) react. please show all work and record your answer with proper units and significant figures.
Pls help

Answers

Answer:

m = 190. g MgCl2

Explanation:

Use a molar ratio to get the # of moles MgCl2 produced from 4.00 mol of HCl:

4.00 mol HCl × (1 mol MgCl2/2 mol HCl) = 2.00 mil MgCl2

So 2.00 moles of MgCl2 will be produced. To find the mass in grams, use the molar mass of MgCl2:

2.00 mol MgCl2 × (95.211 g MgCl2/1 mol MgCl2)

= 190. g MgCl2

How many liters of water would you need to add to 4.36 moles of NaCl to create a 4 M solution?​

Answers

Explanation:

1 M = 1 mol/L

4.36 mol NaCl ×(1L H20 / 4 mol NaCl) = 1.09 L H20

Answer:

1.09 L of water

Explanation:

4.36 mol NaCl ×(1L of H20 / 4 mol NaCl) = 1.09 L of water

What likely caused these different results?

Answers

Answer:

hope help you stay happy

Element 2 is:
A) Cobalt
B)Chlorine
C)Calcium
D)Carbon

Answers

Answer:

D: Carbon

Explanation:

Carbon is the sixth element with a total of 6 electrons in the periodic table. Hence the atomic number Z = 6. The ground state electron configuration of carbon is 1s2 2s2 2p2. An excited state electron configuration of carbon is 1s2 2s1 2p3.

Choose one food chain in the web. Name all of the organisms in that chain. Start with a producer and end with the top level consumer.

Answers

Answer:

Sun

↓

Alfalfa

↓

Rabbit

↓

Coyote

Explanation:

To find - Choose one food chain in the web. Name all of the organisms in that chain. Start with a producer and end with the top level consumer.

Solution -

We know that,

A food chain is a series of events in which one organism eats another and obtains energy.

The Food chain is as follows :

Sun

↓

Alfalfa

↓

Rabbit

↓

Coyote

why does styrofoam fall slower than a rock

Answers

Answer:

The foam board has a larger gravitational force but it also has a very large air resistance force. The net (total) force on the foam board will give it a smaller acceleration than paper.

Explanation:

The air molecules get knocked away and take some of the kinetic energy away from the object, which makes the object slow down

in what group and periods is most reactive metals​

Answers

group one is where the most reactive elements are

Identify Acid-base and conjugate acid-base pair in the following: HCOOH + H20 --> HCOO + H3O+ *​

Answers

Explanation:

HCOOH (aq) + H2O (l) ⇋ HCOO- (aq) + H3O+ (aq)

acid 1 base 2 base 1 acid 2

A fully inflated hot air balloon has a volume of 1,840,000 liters at 100˚C. What approximate volume will the balloon have at 50˚C?

Answers

Answer:

920,000 liters

Explanation:

i divided by 2

Looking at the chart, which substance would heat up the fastest?

Question 9 options:

Iron


Aluminum


Brass


Alcohol

Answers

Answer:

Aluminum would heat up the faster

Aluminum heats up way faster

A ball rolling down a hill will:

keep rolling forever
roll until stopped by a force
gain potential energy

Answers

Roll until stopped by a force
Because an object in motion will stay in motion unless acted upon by an outside force

What do you think could happen with methane gas and CO 2

Answers

Answer:

these gases accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life


2. What harmful change/s is/are brought about when a metal reacts or mixes with acids​

Answers

Answer: hydrogen gas

When metal reacts with acids it produces metal salt and hydrogen gas ( H2 ) . All metals do not react with acids to evolve hydrogen gas . Only those metals react which is more reactive than hydrogen . When metal reacts with acid it forms a salt which is basic in nature and releases hydrogen gas.

Explanation:

Answer:

When metals react with other substances, the gradual wearing away or corrosion of a metal results.This may lead to deterioration of metals

To make a solution for an experiment, Gunther needs to add 40 g of a solute to 100 g of water. When making the solution at room temperature, he could only add 34 grams before the solute settled out.

What could he do to dissolve the remaining 6 grams of the solute?

Put the solution in an ice bath, dissolve the solute, and let the solution return to room temperature.
Heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.
Add more water, boil the solution, and dissolve the solute until the some of the water evaporates.
Keep the solution at room temperature, add more water, and dissolve the excess solute.

Answers

Answer:

B. Heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.

Explanation:

What Gunther should do is to heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.

A solution is composed of a solute and a solvent. The solubility of a solute in a solvent depends on temperature. Especially for solids, solubility increased when the temperature is increased.

Now, from the question, Gunther needs to add 40 g of a solute to 100 g of water. He added 34 grams before the solute settled out. In this case, he needed to dissolve the remaining 6 grams. What Gunther should do is to  to heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.

Learn more: https://brainly.com/question/13620168

What do sex hormones do?

Answers

Answer:

Hormones help regulate many bodily processes, such as appetite, sleep, and growth. Sex hormones are those that play an essential role in sexual development and reproduction. The main glands that produce sex hormones are the adrenal glands and the gonads, which include the ovaries in females and testes in males

Explanation:

What is DNA. in your own words​

Answers

Answer: Molecule that stores genetic information in all organisms.

Explanation:

About how much evaporation in the water cycle occurs over the ocean?

10 percent
40 percent
86 percent
100 percent

Answers

Easy it’s 86 so the third option

Answer:c

Explanation:

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