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
algol13
3 years ago
9

Water contracts as it freezes at 0°C. Solid ice is less dense than liquid water. Liquid water expands with increasing temperatur

e between 0°C and 4°C. Liquid water expands with increasing temperature above 4°C.
Chemistry
1 answer:
Mariulka [41]3 years ago
6 0

Answer:

Explanation:no when water frezzing it will expand and when it weams up it shunkes

You might be interested in
Can someone answer this?
yulyashka [42]

No se si aun necesitas ayuda o no

3 0
2 years ago
4. How might the process of making paper from wood be changed to produce paper that is not acidic?​
kicyunya [14]

Answer:it is sterilized in the process

Explanation:

5 0
2 years ago
Based on the equation, how many grams of Br2 are required to react completely with 36.2 grams of AlCl3?
s2008m [1.1K]

Answer:

65.08 g.

Explanation:

  • For the reaction, the balanced equation is:

<em>2AlCl₃ + 3Br₂ → 2AlBr₃ + 3Cl₂,</em>

2.0 mole of AlCl₃ reacts with 3.0 mole of Br₂ to produce 2.0 mole of AlBr₃ and 3.0 mole of Cl₂.

  • Firstly, we need to calculate the no. of moles of 36.2 grams of AlCl₃:

<em>n = mass/molar mass</em> = (36.2 g)/(133.34 g/mol) = <em>0.2715 mol.</em>

<u><em>Using cross multiplication:</em></u>

2.0 mole of AlCl₃ reacts with → 3.0 mole of Br₂, from the stichiometry.

0.2715 mol of AlCl₃ reacts with → ??? mole of Br₂.

∴ The no. of moles of Br₂ reacts completely with 0.2715 mol (36.2 g) of AlCl₃  = (0.2715 mol)(3.0 mole)/(2.0 mole) = 0.4072 mol.

<em>∴ The mass of Br₂ reacts completely with 0.2715 mol (36.2 g) of AlCl₃ = no. of moles of Br₂ x molar mass</em> = (0.4072 mol)(159.808 g/mol ) = <em>65.08 g.</em>

4 0
3 years ago
The osmotic pressure of a solution formed by dissolving 35.0 mg of aspirin (c9h8o4) in 0.250 l of water at 25°c is __________ at
Lunna [17]
Mass of aspirin = 0.025 g
Molar mass of C9H8O4 is 180.1583 g/mol
moles of aspirin = .025g / 180.1583 g/mol = 0.000138767 moles
volume solution = .250 L
molarity of the solution = 0.000138767 moles / .250L =5.551 x 10 ^-04 Moles / liter
for aspirin i = Vant'Hoff factor = 1 particle in solution
T = 25 + 273 =298 K
osmotic pressure = M x R x T x i =
5.551 x 10 ^-04 mole L -1 x 0.08206 L atm K−1 mol−1 x 298 K x 1 = 0.0136 atmospheres
6 0
3 years ago
Read 2 more answers
Predict the precipitate produced by mixing an Al(NO3)3 solution with a NaOH solution. Write the net ionic equation for the react
weqwewe [10]
Al(NO3)3(aq) + 3NaOH(s) --> Al(OH)3 (s) + 3NaNO3 (aq)

The precipitate here is Al(OH)3 (s), since the solid reactant is the precipitate in the aqueous solution. Usually, it is okay to assume in basic chemistry that the transition metal is going to be part of the compound that is the precipitate, especially in an acidic salt and a strong base reaction that we have here.
4 0
3 years ago
Other questions:
  • How many liters of O2 are required to produce 3.99 miles of CO2?
    10·1 answer
  • In the space, show a correct numerical setup for calculating the number of moles of CO2 present in 11 grams of CO2
    11·1 answer
  • What is an example of a stable system
    13·2 answers
  • Using the following equation for the combustion of octane, calculate the heat associated with the combustion of 100.0 g of octan
    6·2 answers
  • Which of the following best describes a physical change?*
    15·2 answers
  • Given the following unbalanced equation:
    7·1 answer
  • Charlotte is driving at 68.0 mi/h and receives a text message. She looks down at her phone and takes her eyes off the road for 4
    13·1 answer
  • What chemicals do I need to make elephant’s toothpaste
    6·1 answer
  • Molecular and empirical formulas
    9·1 answer
  • Hydroxyapatite, Ca₅(PO₄)₃(OH), is the main mineral component of dental enamel, dentin, and bone. Coating the compound on metalli
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!