The amount of heat transferred to the water if the temperature of 60.0 g of water increases by 4.50 °C is 1.134Kj.
How to calculate heat?The quantity of heat transferred to a substance can be calculated using the following formula:
Q = mc∆T
Where;
Q = quantity of heat (J)m = mass of substancec = specific heat capacity∆T = change in temperatureAccording to the information in this question;
Q = ?m = 60gc = 4.2J/g°C∆T = 4.5°CQ = 60 × 4.2 × 4.5
Q = 1134J
Therefore, the amount of heat transferred to the water if the temperature of 60.0 g of water increases by 4.50 °C is 1.134KJ.
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An atom is electrically neutral because
(a) neutrons balance out the protons and electrons.
(b) nuclear forces stabilize the charges.
(c) the number of protons and electrons are equal.
(d) the numbers of protons and neutrons are equal.
Answer:
c
Explanation:
neutrons have no charge
protons and electrons have opposite charges and balance each other out in equal numbers
Joseph divides 8.64 by 2.0. How many significant figures should his answer have?
Answer:
2 significant figures
Good luck with your work! :)
Distinguish between an acidic and a basic oxide.
(Select all that apply.)
A basic oxide is an oxide that reacts with acids.
An acidic oxide is an oxide that reacts with acids.
In a basic oxide, element forms covalent bonds with oxygen.
In an acidic oxide, element forms ionic bonds with oxygen.
In an acidic oxide, element forms covalent bonds with oxygen.
In a basic oxide, element forms ionic bonds with oxygen.
An acidic oxide is an oxide that reacts with bases.
A basic oxide is an oxide that reacts with bases.
Answer:
an acidic oxide reacts with bases and the seconf
please help I'm stuck on this!
What effect does sunlight have on CO2 molecules?
Answer:
Carbon Dioxide is not affected by sunlight. But the radiation changes direction when it hits a carbon dioxide molecule
Explanation:
How many moles of water (H20) are produced when 2 moles of KMnO, react with plenty of HCI? Show work if can will give most points :) !!
I hope this helps, you can ask any questions for clarification
What is the molarity of a solution that has 26 moles of nacl in 2. 7 l of water?.
The molarity of a solution that has 26 moles of NaCl in 2.7L of water is 9.63M.
How to calculate molarity?The molarity of a solution can be calculated by dividing the number of moles of the solute by the volume of the solution as follows:
Molarity = no of moles ÷ volume
According to this question, a solution has 26 moles of NaCl in 2. 7 l of water. The molarity is as follows:
Molarity = 26mol ÷ 2.7L
Molarity = 9.6M.
Therefore, the molarity of a solution that has 26 moles of NaCl in 2.7L of water is 9.63M.
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What is the temperature change if 400 J of energy is added to 10 grams of water
A) 40 degrees Celsius
B) 1 degrees Celsius
C) 100 degrees Celsius
D) 10 degrees Celsius
The temperature change if 400 J of energy is added to 10 grams of water is 9.57°C.
How to calculate temperature change?The temperature change of a calorimeter can be calculated using the following expression:
E = mc∆T
Where;
E = energy in joulesm = massc = specific heat capacity = 4.18J/g°C∆T = change in temperature400 = 10 × 4.18 × ∆T
400 = 41.8∆T
∆T = 400/41.8
∆T = 9.57°C
Therefore, the temperature change if 400 J of energy is added to 10 grams of water is 9.57°C.
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Which weather condition is NOT associated with warm fronts??
Answer:
A Winter storm usually does not come with a warm fronthey warm front.
Explanation:
When the front passes over an area it means to change in the weather. Many. Many friends cause weather events such as rain thunderstorms gusty winds tornadoes and hurricanes.
Summarize: If you know the RGB values of two colors of light, how could you calculate the RGB value of a mixture of the two colors? _______________________________________
_________________________________________________________________________
Water’s molar mass is 18.01 g/mol. the molar mass of glycerol is 92.09 g/mol. at 25°c, glycerol is more viscous than water. which substance has the stronger intermolecular attraction? glycerol because it has a larger molar mass glycerol because it is more viscous and has a larger molar mass water because it has a lower molar mass water because it is less viscous and has a lower molar mass
Glycerol has the stronger intermolecular attraction because it is more viscous and has a larger molar mass.
What is Viscosity?This is the ability of substances to resist flow and is common among fluids such as air and liquid.
Glycerol however has a stronger intermolecular attraction because it is more viscous and has a larger molar mass because they have a direct relationship.
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Answer:
A-glycerol because it has a larger molar mass
Explanation:
Edge 2022 :)
giving brainliest please help!
Answer:
pretty sure it is
2
1
2
3
1
2
Explanation:
Which type of fuel can only be used in certain geographic areas?
O A. Nuclear
O B. Biomass
O C. Coal
O D. Wind
Answer:
A) Nuculear
Explanation:
Nuclear powerplants are danguorous for the ecosystem and incase of an exsplosion nuclear is the hardest to recover from. Especially if you know the story about Chernobyl blow up. many animals began to grow diffrent mutations and evryone had to evacuate from having desieses and mutations.
Hoped this helped...
how many moles of H2 would be required to produce 37.0 moles of water?
Hii there !
The reaction accompanying production of water in this case would be -
[tex]\green{ \underline { \boxed{ \sf{H_2+ \frac{1}{2}O_2\longrightarrow H_2O}}}}[/tex]
Thus ,by observing the reaction, we can conclude that 1 mole of Hydrogen (H[tex]_2[/tex])react with 1/2 mole of oxygen(O[tex]_2[/tex])to produce 1 mole of water (H[tex]_2[/tex]O)
[tex]\implies[/tex]Therefore, 37.0 moles of hydrogen(H[tex]_2[/tex]) will be required to produce 37.0 moles of water.
Hope it helps.
Toda [4 MARKS] GROUP D: HIGHER ABILITY (HA) 74.2073 Supp. Q.No. 25 केही वस्तुहरूको घनत्व तालिकामा दिइएको छ। उक्त तालिका अध्ययन गरी निम्न प्रश्नहरूको उत्तर दिनुहोस् । (Density of some substance is given in a table. Study the table and answer the following questions:) वस्तु (Substances) घनत्व (Density) X 11 gm/cm Y 8 gm/cm 2Z 0.9 gm/cm i. समान पिण्ड भएका तीनओटा मध्ये सबभन्दा कम आयतन कुन वस्तुको होला ? (Which substance will have least volume if equal masşes of all are taken?) ii. समान आयतन भएका तीनैओटा मध्ये सबभन्दा कम पिण्ड कुन वस्तुको होला ? (Which substance will have the least mass if equal volume of all are taken?) iii. कुन वस्तु पानीमा उविएला ? (Which one will float on water?)
Answer:
Explanation
substance X will have least volume because it has maximum density and using the relation volume inversly propotional to the density of a substance.
substance Z will have least mass beacause it has least density and using relation mass is directly proportional to the volume of a substance .
substance Z will float in water because its density is less than the water (1 gm/cm^3).
" The use of insecticide is not an interest but an obligation". justify the statement
Answer:
Insecticides are not good for health. Their use is harmful to other animals, birds and humans. But, without their use, it is not possible to grow the required amount of food. So, "the use of insecticide is not an interest, but an obligation".
2 H2 + O2 = 2H2O You have 20 grams of H, what's the mass of water?
Answer:
2H2 + O2 —-> 2H2O
The mole ratio of H2 to H2O is 2 : 2 = 1:1
4 moles of H2 = 4 moles of H2O
Moles of H20 = 4mol
Molar mass of H2O = 18g/mol
Mass = moles X Molar mass
= 4mol x 18g/mol
= 72g
Mass of H2O is 72g
Please helpI need help please show work!!
Answer:
≈32°C
Explanation:
1) the rule:
[tex]\frac{pV}{T}=const;[/tex]
2) according to the rule above the final temperature can be calculated as:
[tex]t_{final}=\frac{p_{init}}{p_{final}}*t_{init}; \ = > \ t_{final}=\frac{100}{300}*95=32.[/tex]
According to the Gay-Lussac's law, as volume is constant the temperature must be decreased to 31.6°C.
What is Gay-Lussac's law?Gay-Lussac's law is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.
The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .The law is given by the formula, V₁/T₁=V₂/T₂, which on substitution gives T₂=95×100/300=31.6 °C.The container in Gay-Lussac's law is considered to be rigid in contrast to the container present in Charle's law.
Thus, as per Gay-Lussac's law, as volume is constant the temperature must be decreased to 31.6°C.
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12. Which is true of this cell as the redox reaction is
taking place?
1) The mass of Al electrode will increase, and
the mass of Ni electrode will decrease.
2) The mass of Al electrode will decrease, and
the mass of Ni electrode will increase.
3) The mass of Al electrode will increase, and the
mass of Ni electrode will remain the same.
4) The mass of Al electrode will remain the same,
and the mass of Ni electrode will increase.
Conuri
HELP ME ASAP!
what are some acidic experiments and what information will the experinments provide? And how is it important to do those exerinement?
Answer:
The pH scale measures whether there is more hydronium or hydroxide in a solution. In other words, it tells us how basic or acidic the solution is. A lower pH means something is more acidic, also known as a stronger acid. A higher pH means it is more alkaline or a stronger base.
Helium is most likely to behave as an ideal gas when its under what?
Answer:
Low pressure and high temperature :)
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Which compound below will readily react with a solution of bromine consisting of 48% hydrobromic acid and 30% hydrogen peroxide?
Answer:
cyclohexene I think that's the answer
Choose the general equation for a decomposition reaction.
Answer:
A decompositon reaction is a reaction that takes place when one reactant breaks down into two or more simpler substances. The decomposition reaction can be represented by the general equation: AB → A + B. Most of the decomposition reactions require an input of energy in the form of heat, light or electricity
Explanation:
On a hot summer day Dylan's mom gets him a fully inflated birthday balloon at a nearby City Party. A few minutes after stepping out of the store, the balloon exploded just before she got into her car.
What advice would you provide if City Party has to fill another balloon for her that same hot day?
a) fill balloon just like before
b) fill balloon with slightly more air than before
c) fill balloon with cold air
d) fill balloon with slightly less air than before
Answer:
the answer is d slightly less
10 points get it right ADVPH
Answer:
Advanced Pharmaceutics Inc
Explanation:
Advanced Pharmaceutics Inc
somehow I know this acroynom
What is the oxidation number of each element in PbO2
Answer:
+4
Explanation:
In PbO
2
, oxygen exhibits an oxidation number of −2 (since it's not a peroxide or superoxide).
Let the oxidation number of Pb be x. Then, for the compound to be neutral, the oxidation numbers of all atoms should add up to zero.
⇒x+(−2)+(−2)=0
x=+4
So the oxidation no. of Pb is +4.
The lead (Pb) oxidation number in [tex]\rm PbO_2[/tex] is +4, whereas the oxygen (O) oxidation number is -2.
The idea of oxidation number, also known as oxidation state, is used in chemistry to describe the potential charge that an atom would have if electrons were completely transported in a chemical bond or reaction. It is a valuable instrument for tracking electron distribution in a chemical or ion and understanding redox (oxidation-reduction) reactions. Understanding redox processes, which involve the transfer of electrons between reactants, requires an understanding of oxidation numbers.
Oxidation number of Pb is given as:
(+x) + 2(-2) = 0
x - 4 = 0
x = +4
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. If 3 moles of calcium reacts with 3 moles of oxygen, then a Which substance is the limiting reactant? b How many moles of calcium oxide are formed?
Let's see the balanced equation
[tex]\\ \rm\Rrightarrow 2Ca+O_2\longrightarrow 2CaO[/tex]
Hence
As moles are equal given
Ca should be the limiting reagent2mol Ca produces 2 mol CaO3mol Ca produces 3mol CaOWhich conditions will increase the rate of a chemical reaction?.
Answer:
temperatures
enzyme activity
the thermal energy of the higher-temperature object as does the temperature?
Answer:
Temperature is the average kinetic energy of particles of an object. Warmer objects have faster particles and higher temperatures. If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer.
An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84 neutrons. What happened to the atom? It accepted radiation in a chemical reaction. It donated neutrons to another atom in a chemical reaction. It emitted an alpha particle in a nuclear reaction. It released a beta particle in a nuclear reaction.
Answer:
C
Explanation:
It denotes a loss of 2 protons and 2 neutrons for the atom. As a result, the atom released an alpha particle, which is composed of two protons and two neutrons, hence option C is correct.
What is an alpha particle?The structure of alpha particles, also known as alpha rays or alpha radiation, is similar to that of the helium-4 nucleus and is made up of two protons and two neutrons bonded together.
They often result from the alpha decay process, although they can also result from other processes.
If an atom has 84 protons and 86 neutrons, after the reaction, the atom has 82 protons and 84 neutrons, it suggests that the atom has lost 2 protons and 2 neutrons.
Therefore, the atom emitted an alpha particle in a nuclear reaction, hence option C is correct.
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Why is the magnitude of the electron affinity for a given element smaller than the magnitude of the first ionization g