Answer:
Q = 33105.6 J
Explanation:
Given that,
Mass of water, m = 88 grams
The temperature raised from 48°C to steam at 138°.
We need to find the energy required to raise the temperature. The formula for the energy required is given by :
[tex]Q=mc\Delta T[/tex]
Where
c is specific heat of water, c = 4.18J/g °C
So,
[tex]Q=88\times 4.18\times (138-48)\\\\Q=33105.6\ J[/tex]
So, the required energy is 33105.6 J.
The student who answers the riddle will get the prize ? underline pronoun
.
answer:
the student who answers the riddle will get the prize
explanation:
who is the pronouna pronoun is something that substitutes for a nountrue or false for this question?
Answer:
False, i think
Explanation:
What is the chemical formula of stannic nitride?
Answer:
Stannic nitride, Sn3N4
Explanation:
Describe how both genes and the environment can affect the growth of organisms
Answer:
The environment can affect an organisms through natural evolution. Example: Spotted moths camouflage with the bark on trees, but black moths do not. So the black moths are eaten and the spotted moths survive. The white moths then pass on their genes to their offspring, so their offspring will also be spotted. Eventually most moths will be spotted. But when the industrial revolution occured, the bark of the trees changed to a darker colour. Therefore the spotted moths were easily seen by predators and were eaten. But the black moths blended in with the bark so they survived. The black moths then passed on their genes to their offspring so most of the moth population had black wings.
what conditions are required for establishing an equilibrium?
Answer:
1. By praying in the day or meditating
Being successful in your life will start with deciding to change in order to Learn. To make this happen, you need a good attitude and discipline. If you are already in the place where you are writing, it cannot be said because you probably like other things in your life very much. Make it a habit to start your day by praying or meditating. This will help you feel that you are more than who you think you are, thus showing that you can make it physical than you think you can and be in a different place in life than the one you are facing right now. Connect with yourself, be confident, and understand that you see better.
2.Be fully present when you are with your family
Family life is the area most associated with work-life balance. Having a good family life is like being at the top of your work-life balance. After all, your family will always be with you in your good and bad days. Friendships may end, but family relationships last. Start making changes in your life by making it in your family life. Make it a habit to spend quality time with them. Be more involved in their life, physically and spiritually.
3.Thank you to people you already know
Good connections are essential in business. It causes you to do more and better work. Good and strong connections in your personal life, on the other hand, allow you to develop yourself in different areas of life. This is another way to achieve balance. Developing your environment and making strong connections helps you learn from other people, broaden your perspective, and even broaden your vision of life. Communicate with the least person you know every day. It's always easier for you to start expanding your network with people you know. Tell him what you are busy with, ask him what he is busy with and if he needs help. Asking for help for yourself will also build trust. And it's okay to ask him if he knows other people who can help you
4.Do something creative
Although the left brain right brain dominance theory has been debunked, the world still cares more about activities attributed to the left brain, such as logic and measurement. Most businesses prefer analytical to creative thinking. And many people decide that creative thinking is impractical and discard it. Whatever your job is, you shouldn't give up your creative qualities. As an employee or employer, you have to be creative for more customers, more work and more marketing. Notice how your blood is pumping and how your adrenaline rises. Only right brain activities and creativity affect your lives. More importantly, the way to improve your vision and create new opportunities for your business and social life is through creativity. If your artist side is dominant, you should devote more time to activities such as painting, music, animation, and literature; maybe even consider starting a blog for yourself. This will help you to balance and add color to your life after a long and monotonous 'left-brain' weighted day.
5.30-minute walks
The first five items consisted of things you need to focus on every day for your emotional, relational, and personal success. But in order to develop and enjoy this success, you must also improve your Physical health. Make it a habit to move. Walk for half an hour a day, go to the gym, or even stretch your body every hour you sit down. Physical activities have many alternatives and benefits. Choose the most convenient and tasteful for you.
Explanation:İYİ GÜNLER
Give an example of a system that has energy.
Answer:
Aerobic Energy System
Explanation:
Answer:
Digestive system. It contains chemical energy. The digestive system breaks down food. Food contains chemical energy. To break down the food, the digestive system contains enzymes. Enzymes have kinetic energy to move and break down the food. They are biological catalysts. They transfer to the thermal energy store since in order to break down food at the fastest rate, they need to be at an optimum temperature.
I'm not sure if it's correct, but I'll provide some energy stores to give you inspiration:
Kinetic energy
Chemical energy
Nuclear energy
Gravitational potential energy
Elastic potential energy
Thermal energy
Give the RNA complementary strands of the original strands listed below:
CGAACGTTA
GGCAAATTT
AUGGCAUUA
The number of energy levels is determined by the
a. groups
b. periods
c. valence electrons
d. atomic mass number
Answer:
The answer is C
Explanation:
I did look it up, the other kid just spams random bs for points, hope you didn't get it wrong because of him! :)
Can someone please check my answer??!!
If I have 6.02 x 10^23 cars how many moles of cars do I have?
Answer:
1 mole of car
Explanation:
One mole of a substance is said to be equal to 6.02 × 10^23 atoms, which is Avagadro's number or constant. In other words, 1mole of every substance = 6.02 × 10^23 atoms. Hence, the number of moles in a substance can be calculated by dividing the number of atoms contained in that substance (nA) by 6.02 × 10^23.
According to this question, If I have 6.02 x 10^23 cars, this means that I have:
6.02 x 10^23 cars ÷ 6.02 x 10^23
= 6.02 ÷ 6.02 × 10^(23-23)
= 1 × 1^0
= 1mole of car
When magnesium is added to hydrochloric acid, a gas is formed. Explain what happens in the reaction, how the gas is collected and how it could be tested to prove what it is.
Answer:
Explained below.
Explanation:
Formula when magnesium reacts with hydrochloric acid is given by;
Mg(s) + 2HCl(aq) = MgCl2(aq) + H2(g)
So, from the equation, we can see that the gas formed is hydrogen.
This hydrogen gas is collected by a method known as water displacement.
This gas can be tested for by holding a burning splint near to the top of the test container. The resulting effect should be a high pitched pop sound because the hydrogen gas will react with the oxygen gas in the air to result in a small explosion.
If the reaction produces 400.0 mL of 1.5 M MgCl2, how many moles of HCl reacted?
(A) 0.30 moles
(B) 0.60 moles
(c1.20 moles
(D) 2.40 moles
The number of moles of HCl produces 400.0 mL of 1.5M MgCl₂ is equal to 1.20 moles. Therefore, option (C) is correct.
What is a mole?A mole can be defined as a standard unit that is used to find a huge number of quantities of molecules, atoms, ions, or other particular particles.
The number of entities in one mole was found to be equal to 6.023 × 10²³ which is called Avogadro’s constant.
The chemical equation of magnesium and HCl is:
Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂(g)
The volume of the MgCl₂ solution, V = 400 ml = 0.4 L
The concentration of MgCl₂ = 1.5 M
The number of moles of MgCl₂ = 1.5 × 0.4 = 0.6 moles
One mole of MgCl₂ is produced from HCl = 2
0.6 moles of MgCl₂ is produced from HCl = 2 × 0.6 = 1.20 moles
Therefore, 1.20 moles of HCl will be reacted to produce 0.6 moles of MgCl₂.
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When do scientists believe matter formed
plz i need help
eggs:
ranch dressing
windex
Answer:
Egg is heterogeneous.
Ranch Dressing is heterogeneous
Windex is homogeneous.
what is name of each shape
Answer:
I am so sorry I do not know this
Explanation:
I
A sample of gas has a volume of 606 mL at 35 °C. What temperature is necessary for the
gas to have a volume of 854 ml?
A 49 K
B. 707 K
C. 219 K
D. 434 K
Answer: D. 434 K
Explanation:
To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
where,
[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.
[tex]V_2\text{ and }T_2[/tex] are the final volume and temperature of the gas.
We are given:
[tex]V_1=606ml\\T_1=35^oC=(35+273)K=308K\\V_2=854ml\\T_2=?[/tex]
Putting values in above equation, we get:
[tex]\frac{606}{308}=\frac{854}{T_2}\\\\T_2=434K[/tex]
Thus temperature necessary for the gas to have a volume of 854 ml is 434 K
CHEMISTRY
OXIDATION NUMBERS
please help me solve only 3 of those oxidation numbers
NO2
Cr2O72-
KCl
NH3
CaH2
SO42-
Na2O2
SiO2
CaCl2
Answer:
NO2=Nitrogen dioxide
KCL=potassium chloride
NH3=Ammonia
Can you identify a sample from a living organism by examining it under a microscope? Yes or No
2. Calculate the [H+] in the following solutions, given their pH, and identify the solution as acidic, basic or neutral.
a) pH = 2.5
b) pH = 11.7
c) pH = 6.8
d) pH = 3.31
Answer:
a) acidic; [H+] = 10^-2.5 = 3 x 10^-3
b) basic; [H+] = 10^-11.7 = 2 x 10^-12
c) slightly acidic (almost neutral); [H+] = 10^-6.8 = 1.6 x 10^-7
d) acidic; [H+] = 10^-3.31 = 4.9 x 10^-4
Explanation:
pH < 7 is acidic; pH > 7 is basic; pH = 7 is neutral
[H+] = 10^-pH
A is acidic, B is basic, C is slightly acidic, and D is acidic.
What is pH?
pH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions.
a) Acidic; [[tex]H^+[/tex]] = [tex]10^-^2^.^5[/tex] = [tex]3 X 10^-^3[/tex]
b) Basic; [[tex]H^+[/tex]] = [tex]10^-^1^1^.^7[/tex] = [tex]2 X 10^-^1^2[/tex]
c) Slightly acidic (almost neutral); [[tex]H^+[/tex]] = [tex]10^-^6^.^8[/tex]= [tex]1.6 X 10^-^7[/tex]
d) Acidic; [[tex]H^+[/tex]] = [tex]10^-^3^.^3^1[/tex]= [tex]4.9 X 10^-^4[/tex]
pH < 7 is acidic; pH > 7 is basic; pH = 7 is neutral
Hence, a is acidic, b is basic, c is slightly acidic, and d is acidic.
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The number of collisions between the particles of hydrogen and nitrogen is increased by using high
pressure and _______
What one word completes the sentence?
Answer:
temperature
Explanation:
increase in temperature increases the rate of reaction
If you begin with 4.0 grams of hydrogen and all of the oxygen that you need, how many grams of water can you make?
the water is 36 grams.
hope this helped
How many grams are 3.01 x 10^23 molecules of methane (molar
mass = 16.04 g/mol)?
Answer:
8.02
Explanation:
When water is separated into its elements what will be the ratio?
Answer:
IT îs said that the cell separarea water into its constituent elemente hidrogen and oxigen . Turn the hidrogen will ne burned ți obtain energy nu restoring the water molecules.
Enid claims that two concentrated solutions will have a lower reaction rate
than two dilute solutions. Which statement tells whether Enid is right and
gives a correct explanation?
O A. She is right, because the dilute solutions give the molecules more
room to move around and align themselves well for collisions.
B. She is right, because the dilute solutions give the molecules more
space to move more quickly.
C. She is not right, because there will be more successful collisions
between reactants in the dilute solutions.
D. She is not right, because there will be more successful collisions
between reactants in the concentrated solutions.
D. She is not right, because there will be more successful collisions
between reactants in the concentrated solutions.
Enid claims that two concentrated solutions will have a lower reaction rate than two dilute solutions. The statement tells that whether Enid is right given as ". She is not right, because there will be more successful collisions between reactants in the concentrated solutions.
So, option D is correct one.
What is concentrated solution?A solution which has relatively large amount of dissolved solute.
Since, rate of the reaction depends upon collision between reactants molecules. Due to presence of large amount of dissolved solute in concentrated solution, more collision is takes place between solute molecules. So, rate of reaction of concentrated solution is more as compare to dilute solution.
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What is meant by atomic number?
A. number that represents the number of electrons in the valence shell of an atom
B. number that represents how many neutrons are in an atom’s nucleus
C. number that represents how many protons are in an atom’s nucleus
D. number that represents the total number of particles in an atom’s nucleus
Atomic number of an atom is a number that represents how many protons are in an atom’s nucleus.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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What does RNA do?
Group of answer choices
A.make proteins
B.carries codes out of the nucleus
C.controls traits
Answer:
b, its a polymer that translates genetic information.
If a scientist did an experiment to see how adding sugar to plant water would affect the plant’s growth, what would be the dependent variable
sugar would be a dependent factor
What best describes a mixture
Answer:
In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. ... A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
What particle revolves around the center of the atom? What is its Charge?
Answer:
Electrons, with a charge of -1.
Explanation:
The nucleus of the atom is composed of protons and neutrons.
The nucleus is where the bulk of the mass of an atom is found.
Electrons orbit the nucleus in various energy levels.
Protons have a charge of +1, neutrons have no charge, and electrons have a charge of -1.
A molecule with two atoms and no lone pairs around the central atom has a
shape.
A molecule with four atoms and no lone pairs around the central atom has a
shape.
A molecule that has two atoms and two lone pairs around the central atom has a
shape.
A molecule that has five atoms and no lone pairs around the central atom has a
shape.
DONE
Answer: linear
tetrahedral
bent
trigonal bipyramidal
Explanation:
When there are two atoms around the central atom and no lone pair of electrons, the number of electron pairs will be 2 that means the hybridization will be sp and the electronic geometry of the molecule will be linear.
When there are four atoms around the central atom and no lone pair of electrons, the number of electron pairs will be 4 that means the hybridization will be [tex]sp^3[/tex] and the electronic geometry of the molecule will be tetrahedral.
When there are two atoms around the central atom and two lone pair of electrons, the number of electron pairs will be 4 that means the hybridization will be [tex]sp^3[/tex] and the electronic geometry of the molecule will be bent.
When there are five atoms around the central atom and no lone pair of electrons, the number of electron pairs will be 5 that means the hybridization will be [tex]sp^3d[/tex] and the electronic geometry of the molecule will be trigonal bipyramidal.