4. Calculate The Heat Energy Needed To Heat 25.0 G Of Water From 13.0C To 18.0C. Use Chart Above For (2024)

Chemistry High School

Answers

Answer 1

Answer:

f

Explanation:

Related Questions

What is the systematic name for C₃H₈?

Answers

Answer:

propane( organic compunds).

What is the systematic name for C3H8 is Propane

HELP 5TH GRADE SCIENCE What physical structure has spines that protect the plant from predators?

Flower
Pistil
Outer covering
Reproductive organs

Answers

Answer: 3 - outer covering

Explanation:

What physical structure has spines that protect the plant from predators?

1)Flower

2)Pistil

3)Outer covering

4)Reproductive organs

Outer covering is the physical structure has spines that protect the plant from predators. Therefore, option C is correct.

What do you mean by the predators ?

Predators are living things that go for and kill prey. The term "prey" refers to the living things that predators eat. Both carnivores and omnivores may be predators. Predators include lions, tigers, sharks, and snakes.

Predation can be classified into four categories: carnivory, herbivory, parasitism, and mutualism. Depending on whether the victim dies, each sort of predation may be classed.

Plants are shielded against parasite invasion by their epidermis. It creates an external covering for plant organs that are constantly in contact with the outside world. This epidermis is further protected by a cuticle, which is a layer of fatty material.

Thus, option C is correct.

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Explain why sodium hydroxide is left in the solution after brine (a concentrated solution of sodium chloride ) is electrolysed.

Answers

Answer:

Sodium hydroxide us formed during the electrolysis of sodium chloride solution.

Explanation:

During electrolysis, hydrogen and chloride ions are removed from the solution, whereas sodium and hydroxide ions are left behind in solution.

Hope this helped

what is the compound name for (NH4)2SO4​

Answers

Answer:

Diazanium sulfate is the correct answer.

Explanation:

Hope this helped Mark BRAINLIEST!!

It is necessary to develop alternative sources of energy because____.
scientists are uncertain of how long the resources will last.
scientists are certain of how long the resources will last.
only a select group of people have information on our resources.
scientists have estimated how long the resources will last.

Answers

Answer:

scientists are uncertain of how long the resources will last.

Explanation:

It is hard to estimate how long certain natural resources will last because they are dependent upon the rate of consumption and other factors. There are many fields of studies going into alternative energy. Since the technology needed for some of these ideas will take time to be developed, alternative sources of energy must be found before the resources we already have run out.

Answer: A. scientists are uncertain of how long the resources will last.

Explanation:

We are looking into many other types such as: Solar, Nuclear, Water, Etc.

Cc
( (CC
?
A man and a woman want to have a child, but the man is heterozygous (Ce) for a
recessive trait that causes a fatal illness. What is the probability of a child inheriting the
trait?
a 50%
b. 25%
c. 0%
d. 75%

Answers

Answer:

You should be posting this question under the biology tab, but here's the answer nonetheless.

a. 25% (if the woman is Ce)

c. 0% (if the woman isn't Ce)

Because they have aromas, compounds with a ring of resonance bonds are called –
A) fragrent compounds
B) pungent molecules
C) aromatic compounds
D) scented structures

Determine the AMOUNT OF NO2, LIMITING REACTANT, AND THE AMOUNT AND NAME OF EXCESS REACTANT.

10.00 g of O2 reacts with 20.00 g NO

The molar masses of O2, NO, and NO2 are 32.00 g/mol, 30.01 g/mol, and 46.01 g/mol, respectively

Answers

Answer:

balanced equation mole ratio 5 2 mol NO/1 mol O2

10.00 g O2 3 1 mol O2/32.00 g O2 5 0.3125 mol O2

20.00 g NO 3 1 mol NO/30.01 g NO 5 0.6664 mol NO

actual mole ratio 5 0.6664 mol NO/0.3125 mol O2 5 2.132 mol NO/1.000 mol O2

Because the actual mole ratio of NO:O2 is larger than the balanced equation mole

ratio of NO:O2, there is an excess of NO; O2 is the limiting reactant.

Mass of NO used 5 0.3125 mol O2 3 2 mol NO/1 mol O2 5 0.6250 mol NO

0.6250 mol NO 3 30.01 g NO/1 mol NO 5 18.76 g NO

Mass of NO2 produced 5 0.6250 mol NO2 3 46.01 g NO2/1 mol NO2 5 28.76 g NO2

Excess NO 5 20.00 g NO 2 18.76 g NO 5 1.24 g N

Explanation:

PLEASE HELP ASAP

Volcanoes erupt as a result of
A) Two continental plates converging
B) One oceanic plate converging with one continental plate
C) Two tectonic plates transforming

Answers

Answer:

B.) One oceanic plate converging with one continental plate.

HOPE THIS HELPS!

Answer:

C: Two tectonic plates transforming

Why does the United kingdom have a temperate climate instead of a polar climate

Answers

Answer:

https://www.bbc.co.uk/bitesize/guides/zpykxsg/revision/3 (i know ppl hate it when you put links but i actually think this may explain it)

Explanation:

List three differences between the earth 240 million years ago and the present earth.

Answers

Dinosaurs, cavemen, sabertooth tiger

Please help me with this net ionic chem question. I’ll mark you brainiest if you know it.

Answers

Answer:

B: 3k+ + 3OH¯ + Fe3+ + 3KOH = Fe3(H) + + 3NO3¯

Explanation:

Potassium hydroxide (KOH) reacts with iron (III).

The normal balanced equation is;

Fe(NO3)3 + 3KOH = Fe(OH)3 + 3KNO3

Now the ionic equation will be;

3k+ + 3OH¯ + Fe3+ + 3KOH = Fe3(H) + + 3NO3¯

Can someone pls pls help ASAP!!

Answers

Answer:

I think it’s the first one, holly ferns sorry if I’m wrong!

How many moles are in 25.90 grams of NaCl

Answers

Answer:

0.44316859040048207mol

Explanation:

What is the molarity of a solution which contains 0.80 mol of HCl in 250mL of
solution?

Answers

Answer:

3.2M HCl Solution

Explanation:

Molarity = moles of solute / volume of solution expressed in liters

moles of solute = 0.80 moles HCl

volume of solution = 250 ml = 0.250 Liter

Molarity (M) = 0.80 moles HCl / 0.250 Liters = 3.2M HCl Solution

A truck can carry a maximum load of 8000 kg.
The truck is loaded with packages each with a mass of 35 kg
correct to two significant figures.
Calculate the maximum number of packages
that the truck can carry.
did any one tell me the answer it's from lower and upper bound chapter​

Answers

228 packages

8000 / 35 = 228.57 —> You want to round down in this context, because 229 packages would exceed the weight limit.

Which example describes biotic factors interacting with the environment?
sunlight shining through a window
O oxygen circulating in the atmosphere
O rain forming puddles on the sidewalk
O butterflies resting on the flower of a plant

Answers

Answer:

O butterflies resting on the flower of a plant

Answer:

The answer is butterflies resting on the flower of a plant.

Explanation:

what compound is YCI3

Answers

Answer:

Yttrium, Carbon, Iodine

Explanation:

Y stands for Yttrium

C stands for Carbon

I stands for Iodine

and 3 stands for 3 Iodine atoms

What is one way that you could increase the rate of a chemical reaction occurring between two solutions (dissolved in liquid)? You must explain your answer in terms of particle behavior and collisions for the point.

Answers

Answer:

Putting fire below them

Explanation:

Fire is a method used for burning stuff faster as the heat transforms into energy

Please help! Using table of average bond energies below the (trianglesymbol)H for the reaction is ___kJ

Answers

Answer:

-217 kJ

Explanation:

ΔH = reactant energy - product energy

ΔH = [(C-H) × 2 + (C≡C)] + [2 × H-I] - [(I-C) × 2 + (C-H) × 4 + (C-C)]

ΔH = [ (413 × 2 ) + 839 + 2(299)] - [(240 × 2) + (413 × 4) + 348]

ΔH = [826 +839 + 598] - [ 480 +1652 + 348]

∴ ΔH = -217

Calculate the grams of CaCl2 necessary to make a 0.15Msolution.

Answers

Answer: mass m = M·c·V

Explanation: M(CaCl2) = 110.98 g/mol, c= 0.15 mol/l,

n=m/M= cV, volume of Solution is not mentioned

125 ml of nitrogen gas is collected at 70.0 degrees Celsius. The pressure
in the container is 125 kPa. What will be the volume of the gas at STP?
Round and record your answer exactly like the given volume of 125 ml (3
digits) with a space then the unit.

PLS HELP!! due at the end of the day :(

Answers

Answer: Volume of the gas at STP is 22.53 L.

Explanation:

Given : Volume = 125 mL (as 1 mL = 0.001 L) = 0.125 L

Temperature = [tex]70^{o}C = (70 + 273) K = 343 K[/tex]

Pressure = [tex]125 kPa = 125 kPa \times \frac{0.01 atm}{1 kPa} = 1.25 atm[/tex]

According to the ideal gas equation, the volume of given nitrogen gas is calculated as follows.

PV = nRT

where,

P = pressure

V = volume

n = number of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

[tex]1.25 atm \times V = 1 mol \times 0.0821 L atm/mol K \times 343 K\\V = \frac{1 mol \times 0.0821 L atm/mol K \times 343 K}{1.25 atm}\\= \frac{28.1603}{1.25} L\\= 22.53 L[/tex]

Hence, volume of the gas at STP is 22.53 L.

what is amphotheric oxide give me an two instance​

Answers

Answer:

Amphoteric oxide is an oxide that reacts with both acids and bases. In other words, it possesses both acidic and basic properties. For example both zinc and aluminium are metals but their oxides, ZnO and Al2O3 are amphoteric oxides as they react with both acids and bases.

Explanation:


PLZZ I WILL GIVE Braliest!!!
What makes a radioactive decay chain end?
A. The final element has the longest half-life.
B. All mass has been converted to energy.
C. The radiation is absorbed by something.
D. The final product is not radioactive.
SUBMIT

Answers

[tex]\huge{\mathbb{\tt {QUESTION:}}}[/tex]

What makes a radioactive decay chain end?

OA. The final element has the longest half-life.

OB. All mass has been converted to energy.

OC. The radiation is absorbed by something.

OD. The final product is not radioactive.

[tex]\huge{\mathbb{\tt {ANSWER:}}}[/tex]

D. The final product is not radioactive

[tex]\huge{\mathbb{\tt {EXPLANATION:}}}[/tex]

A radioactive decay chain will end when the last particle formed is stable. The initial radioactive isotope is called the parent isotope.

#CarryOnLearning

#LetsEnjoyTheSummer

X x K i m 0 2 x X

A decay chain will end only when the final product is not radioactive.

What is radioactivity?

The term radioactivity has to do with the sponteanous disintegration of an atom with the emission of radiation. Usually, there are radioactive decay series for different isotopes.

A radioactive decay series will continue untill a stable isotope is formed hence, a decay chain will end only when the final product is not radioactive.

Learn more about radioactivity: https://brainly.com/question/14356798

are insert gases used in fluorescent​

Answers

hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF6) and nitrogen trifluoride (NF3).

Jane made this picture to represent a chemical reaction

Which of the following statements best explains the type of chemical reaction represented by Jane's picture?
It represents a synthesis reaction because one combined reactant forms multiple products
Olt represents a synthesis reaction because the same atoms are present in the reactants and products
It represents a decomposition reaction because one reactant breaks apart and forms two products
It represents a decomposition reaction because the total mass of the products is less than the mass of the reactant.

Answers

Answer:

It represents a decomposition reaction because one reactant breaks apart and forms two products

Explanation:

Your welcome

To solve such this we must know the concept of redox reaction. Therefore, the correct option is option C. It represents a decomposition reaction because one reactant breaks apart and forms two products.

What is chemical reaction?

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Decomposition reaction is a chemical reaction where one reactant breaks down into two or more than two products on supplying energy in form of heat or electricity.

Therefore, the correct option is option C. It represents a decomposition reaction because one reactant breaks apart and forms two products.

Learn more about the chemical reactions, here:

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Plz help question is in attachment

Answers

Answer:

The total mass will be same of both side!!!!! ig so

Calculate mass (in grams) of sodium in 8.5 g of NaCl (table salt).

Answers

Answer: I go search some information

Explanation:I come back with a answer

Describe the conversion of light energy in a blackberry plant.

Answers

Answer:

Anthocyanins are used in organic solar cells because of their strong light harvesting, and their ability to convert this light energy into electrical energy.

Explanation:

Solar panels plug you into the sun by absorbing solar energy with photovoltaic (PV) cells. When hit with sunlight, they generate electricity which then flows into a device called an inverter which converts the electricity into a form (120 volts, 60Hz) for household use.

what does binding energy measure

Answers

Answer:

"Electron binding energy, more commonly known as ionization energy, is a measure of the energy required to free an electron from its atomic orbital or from a solid. ... The atomic binding energy of the atom is the energy required to disassemble an atom into free electrons and a nucleus."

Explanation:

Hope this helps! <33

God bless your heart <3333

have a wonderful day!

Binding energy is a required amount of energy that disperses the other particles of the reaction system. It measures the energy needed to free an electron or a subatomic particle.

What is binding energy?

Binding energy is the ionization energy that depicts how much energy will be needed if an electron has to be removed from an atom for a reaction to occur.

It can be said that the energy required to free an electron from the orbit of the atom is measured in electron volt (eV). It is a little different from ionization energy as binding energy can remove any subatomic particle and not just an electron.

Therefore, the binding energy measures the freed subatomic particle.

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4. Calculate The Heat Energy Needed To Heat 25.0 G Of Water From 13.0C To 18.0C. Use Chart Above For (2024)

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