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
muminat
1 year ago
12

If the heat capacity of an object is known, what other information will need to be known to calculate its specific heat capacity

?
A. its volume
B. its temperature
C. its energy
D. its mass

Please answer
Chemistry
2 answers:
zimovet [89]1 year ago
4 0

Answer:

B. its temperature

Explanation:

Zolol [24]1 year ago
3 0
Im sure is B) Its temperature
You might be interested in
PLZ I NEED THIS NOW A chemical change can also be called a chemical _________.
posledela
A chemical change can also be called a chemical reaction
6 0
3 years ago
Read 2 more answers
Using stoichiometry, you predict that you should be able to use 314.0 g of Al to produce 1551 g of AlCi3. In your lab
Alex787 [66]

Answer:

90.26%

Explanation:

From the question given above, the following data were obtained:

Theoretical yield of AlCl₃ = 1551 g

Actual yield of AlCl₃ = 1400 g

Percentage yield =?

The percentage yield of the reaction can be obtained as follow:

Percentage yield = Actual yield / Theoretical yield × 100

Percentage yield = 1400 / 1551 × 100

Percentage yield = 140000 / 1551

Percentage yield = 90.26%

Thus, the percentage yield of the reaction is 90.26%

6 0
3 years ago
Rainforests may be located in what latitude range?
SpyIntel [72]

Answer:

near the equator where it's hot

6 0
2 years ago
Define "mole in chemistry terms
Mashutka [201]

Answer:

Can you please post a pictah.

Explanation:

3 0
3 years ago
Read 2 more answers
Hard water often contains dissolved Ca2+ and Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms in
avanturin [10]
<span>5.5×10−2M in calcium chloride and 8.0×10−2M in magnesium nitrate.
What mass of sodium phosphate must be added to 1.5L of this solution to completely eliminate the hard water ion

1) Content of Ca (2+) ions

Calcium chloride = CaCl2

Ionization equation: CaCl2 ---> Ca (2+) + 2 Cl (-)

=> Molar ratios: 1 mol of CaCl2 : 1 mol Ca(2+) : 2 mol Cl(-)

Calculate the number of moles of CaCl2 in 1.5 liters of 5.5 * 10^-2 M solution

M = n / V => n = M*V = 5.5 * 10^ -2 M * 1.5 l = 0.0825 mol CaCl2

=> 0.0825 mol Ca(2+)

2) Number of phosphate ions needed to react with 0.0825 mol Ca(2+)

formula of phospahte ion: PO4 (3-)

molar ratio: 2PO4(3-) + 3Ca(2+) = Ca3 (PO4)2

Proportion: 2 mol PO4(3-) / 3 mol Ca(2+) = x / 0.0825 mol Ca(2+)

=> x = 0.0825 coml Ca(2+) * 2 mol PO4(3-) / 3 mol Ca(2+) = 0.055 mol PO4(3-)

3) Content of Mg(2+) ions

Ionization equation: Mg (NO3)2 ----> Mg(2+) + 2 NO3 (-)

Molar ratios: 1 mol Mg(NO3)2 : 1 mol Mg(2+) + 2 mol NO3(-)

number of moles of Mg(NO3)2 in 1.5 liter of 8.0 * 10^-2 M solution

n = M * V = 8.0 * 10^ -2 M * 1.5 liter = 0.12 moles Mg(NO3)2

ions of Mg(2+) = 0.12 mol Mg(NO3)2 * 1 mol Mg(2+) / mol Mg(NO3)2 = 0.12 mol Mg(2+)

4) Number of phosphate ions needed to react with 0.12 mol Mg(2+)

2PO4(3-) + 3Mg(2+) = Mg3(PO4)2

=> 2 mol PO4(3-) / 3 mol Mg(2+) = x / 0.12 mol Mg(2+)

=> x = 0.12 * 2/3 mol PO4(3-) = 0.16 mol PO4(3-)

5) Total number of moles of PO4(3-)

0.055 mol + 0.16 mol = 0.215 mol

6) Sodium phosphate

Sodium phosphate = Na3(PO4)

Na3PO4 ---> 3Na(+) + PO4(3-)

=> 1 mol Na3PO4 : 1 mol PO4(3-)

=> 0.215 mol PO4(3-) : 0.215 mol Na3PO4

mass in grams = number of moles * molar mass

molar mass of Na3 PO4 = 3*23 g/mol + 31 g/mol + 4*16 g/mol = 164 g/mol

=> mass in grams = 0.215 mol * 164 g/mol = 35.26 g

Answer: 35.26 g of sodium phosphate
</span>
5 0
3 years ago
Other questions:
  • Explain the relationship between chemical bonds and energy in the body.
    13·1 answer
  • How co you find anhydrides?
    6·1 answer
  • An insulated 8m* rigid tank contains air, modeled as an ideal gas, at 600kPa and 400K. A valve connected to the tank is opened a
    10·1 answer
  • The ph of lemon juice is approximately 2.4. at this ph, the hydronium ion concentration is closest to which value? 1. 250 m 2. 4
    11·2 answers
  • Find the mass in grams of 2.65 x 10^24 molecules of cl2
    10·1 answer
  • A chemist determined the boiling point of c8h18 to be 124.1c the actual boiling point is 125.7 what is the percent error
    8·1 answer
  • Why is it important to check for violations of assumptions when hypothesis testing?
    11·1 answer
  • What is the differnce between the atomic number and the mass number of an element?
    9·1 answer
  • How do you balance H2+O2 and H2O
    10·1 answer
  • The term used to describe the Moon phases as the light spreads across the surface of the moon or grows.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!