1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marysya [2.9K]
3 years ago
11

To heat 1g of water by 1c requires

Chemistry
2 answers:
Black_prince [1.1K]3 years ago
5 0

Answer: B) 1 Calorie

Explanation: The heat required to raise the temperature of 1 gram of a substance by 1 degree C is known as its specific heat capacity.

Specific heat capacity of water is \frac{4.184Joule}{g*0_C} and we know that, 4.184 Joule = 1 Calorie

So, specific heat capacity of water is \frac{1Calorie}{g*0_C} and hence the correct choice is B.

Pie3 years ago
4 0

C, because specific heat is measured in Joules/grams°C

You might be interested in
Based on my scale, I have 35g of aluminum. How many aluminum atoms is this? SHOW YOUR WORK.
Aleksandr-060686 [28]
One mole of a substance contains 6.02×10∧23 particles,
1 mole of a aluminium contains 27 g
35 g of aluminium contains 35/27 =1.296 moles
 Thus, the number of particles will be 1.296 × 6.02 ×10∧23
      = 7.804 × 10∧23 particles,
Hence, 35 g of Aluminium contains 7.804 × 10∧23 atoms
3 0
3 years ago
Which of these solutes raises the boiling point of water the most?
VMariaS [17]
Raising of the boiling point is a colligative property. That means that it depends on the number of particles dissolved. The greater the number of particles the greater the increase in the boiling point. So, you can compare the effect of these solutes in the increase of the boiling point by writing the chemical equations and comparing the number of particles dissolved: 1)ionic lithium chloride, LiCl(s) --> Li(+) + Cl (-) => 2 ions; 2) ionic sodium chloride, NaCl(s) --> Na(+) + Cl(-) => 2 ions; 3) molecular sucrose, C12H22O11 (s) ---> C12H22O11(aq) => 1 molecule; 4) ionic phosphate, Na3PO4 --> 3Na(+) + PO4 (3-) => 4 ions; 5) ionic magnesium bromide, MgBr2 --> Mg(2+) + 2 Br(-) => 3 ions. <span>So, ionic phosphate produces the greatest number of particles and it will cause the greatest increase of the boiling point.</span><span />
4 0
3 years ago
PLSSSSS HEEEELP!!!!
Naily [24]
Following is the balanced <span>radioactive decay series:
</span><span>
Particle/radiations generated during the reaction are labeled in bold at end of reaction. 

Care must be taken that, atomic number and atomic mass number should be balanced in each of these reactions.

1) 92 238U </span>→ <span> 90 234Th + 2 4He(</span>α particle<span>)

A = </span>90 234Th because alpha particle is emitted along with it. So atomic number of daughter element has to be 92 - 2 = 90. This corresponds to Th. <span>

2) 90 234Th  </span>→<span> 91 234Pa + -1 0e (electron)

B = -1 0e i.e electron
 because after radioactive disintegration atomic number of daughter element (Pa) is +1 as compared to parent element (Th)


3) 91 234Pa  </span>→<span> 92 234U + –1 0e (electron)

</span>C = 92 234U because electron is emitted along with it. So atomic number of daughter element has to be 91 - (-1) = 92. This corresponds to U. <span>

4) 92 234U </span>→ 90 230Th + 2 4He (α particle<span>)

</span><span>In this case, 92 234U undergoes nuclear disintegration to generate 90 230Th and alpha particle

5) 90 230Th </span>→<span> 88 226Ra + 2 4He </span>(α particle)

D = 88 226Ra because alpha particle is emitted along with it. So atomic number of daughter element has to be 90 - 2 = 88. This corresponds to Ra. 

<span>6) 88 266Ra </span>→ 86 222Rn + 2 4He (α particle)

E = alpha particle because during nuclear disintegration, 88 266Ra is converted into 86 222Rn. Hence, for mass balance we have 88 - 86 = 2. It corresponds to alpha particles.
<span>
7) 86 222Rn </span>→<span> 84 218Po + 2 4He </span>(α particle)

Again, F = alpha particle because during nuclear disintegration, 86 222Rn is converted into 84 218Rn. Hence, for mass balance we have 86 - 84 = 2. It corresponds to alpha particles.
<span>
8) 84 218Po </span>→<span> 82 214Pb + 2 4He </span>(α particle)

G = 82 214Pb because alpha particle is emitted along with it. So atomic number of daughter element has to be 84 - 2 = 82. This corresponds to Pb.
<span>
9) 82 214Pb </span>→<span> 83 214Bi + -1 0e (electron)

H = </span>-1 0e because after radioactive disintegration atomic number of daughter element (Bi) is +1 as compared to parent element (Pb)<span>

10) 83 214Bi </span>→<span> 84 214Po + –1 0e (electron)

I = 
</span>84 214Po because electron is emitted along with it. So atomic number of daughter element has to be 83 - (-1) = 84. This corresponds to Po.<span>

11) 84 214Po </span>→<span> 82 210Pb + 2  4He </span>(α particle)

J = 82 210Pb because alpha particle is emitted along with it. So atomic number of daughter element has to be 84 - 2 = 82. This corresponds to Pb.
8 0
3 years ago
What is the energy of a photon with the frequency of 1.02 x 1015 Hz?<br> Please show your work!
galben [10]
<span> E = h v where v = frequency h = plancks constant 6.626 * 10 - 34

4.8 * 6.626 = 31.8 </span>
7 0
3 years ago
A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemic
yulyashka [42]

Answer: PCl₃O

Explanation:

1) The chemical formula tells the composition of a compound in terms of the ratio of number of atoms of each element that consitutes such compound.

2) You use the chemical symbol for each kind of atom (element) and subscripts to the right of each symbol to tell the number of atoms of each element.

3) For example, O₂ means two atoms of oxygen. Al₂O₃ means two atoms of aluminum and 3 atoms of oxygen.

4) Therefore, PCl₃O means a ratio 1 : 3 : 1 for phosphorus, chlorine, and oxygen.

Hence, PCl₃O is the chemical formula of your compound.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Lewis diagrams of molecules of three different hydrocarbons are shown above. Which of the following claims about the molecules i
    13·1 answer
  • Electrons in __________ bonds remain localized between two atoms. electrons in __________ bonds can become delocalized between m
    9·1 answer
  • Which city had the highest temperature
    8·2 answers
  • A chemistry student needs 30,0 mL of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the stu
    15·1 answer
  • Why could I do for a science fair
    6·2 answers
  • Calculate the number of moles of NaCl contained in 0.500L of a 1.5M solution
    15·1 answer
  • What type of bond is neon?
    10·1 answer
  • Which title is most appropriate for this table? ANSWERS: Uses of Functional Groups Involving Oxygen Natural Sources of Functiona
    7·1 answer
  • What is chalk made of?
    11·2 answers
  • Which of the following are reasons the ocean marine biomes are a challenging place for organisms to live? Choose all that apply.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!