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
andrey2020 [161]
3 years ago
9

The freezing point of a 0.30 m KCl solution will have the same freezing point that a 0.20 m Ca(NO3)2 solution.

Chemistry
2 answers:
igor_vitrenko [27]3 years ago
6 0
False freezing point does not depend on volume
Tcecarenko [31]3 years ago
3 0
False it doesn’t depend on volume
You might be interested in
Number of grams of hcl that can react with 0.500 grams of Al(OH)3
vlabodo [156]

Answer:

0.7g of HCl

Explanation:

First, let us write a balanced equation for the reaction between HCl and Al(OH)3.

This is illustrated below:

Al(OH)3 + 3HCl —> AlCl3 + 3H2O

Next, let us obtain the masses of Al(OH)3 and HCl that reacted together according to the equation. This can be achieved as shown below:

Molar Mass of Al(OH)3 = 27 + 3(16+1)

= 27 + 3(17) = 27 + 51 = 78g/mol.

Molar Mass of HCl = 1 + 35.5 = 36.5g/mol

Mass of HCl from the balanced equation = 3 x 36.5 = 109.5g

Now we can obtain the mass of HCl that would react with 0.5g of Al(OH)3. This can be achieved as follow:

Al(OH)3 + 3HCl —> AlCl3 + 3H2O

From the equation above,

78g of Al(OH)3 reacted with 109.5g of HCl.

Therefore, 0.5g of Al(OH)3 will react with = (0.5 x 109.5)/78 = 0.7g of HCl

7 0
3 years ago
The physical and chemical properties of a molecule depend on its structure. Here are two ball-and-stick models for two compounds
djyliett [7]

Answer:

Ethanol has covalent intramolecular bonds. Ethanol is polar. Ethanol has dispersion intermolecular forces. Dimethyl ether is polar. Dimethyl ether forms hydrogen bonds. Dimethyl ether has dispersion intermolecular forces.

Explanation:

Ethanol is not a carboxylic acid. It is an alcohol and it has covelent intramolecular bonds. It is polar and it also has dispersion intermolecular forces.

Dimethyl ether is also polar and it has forms hydrogen bonds. It also has dispersion intermolecular forces. Dimethyl ether does not have ionic intramolecular forces

7 0
3 years ago
Read 2 more answers
How does a tiny seed turn into a tree overtime?
12345 [234]

Answer:

A group of cells ready to form roots a stem and the first leaves

3 0
3 years ago
Phosphorus atomic radius is smaller than magnesium atomic radius <br> True or false
stealth61 [152]

Answer:

True

Explanation:

Atomic radius can be defined as a measure of the size (distance) of the atom of a chemical element such as hydrogen, oxygen, carbon, nitrogen etc, typically from the nucleus to the valence electrons. The atomic radius of a chemical element decreases across the periodic table, typically from alkali metals (group one elements such as hydrogen, lithium and sodium) to noble gases (group eight elements such as argon, helium and neon). Also, the atomic radius of a chemical element increases down each group of the periodic table, typically from top to bottom (column).

<em>Hence, the atomic radius of phosphorus is smaller than the atomic radius of magnesium. Basically, the atomic radius of phosphorus is 98 pm while the atomic radius of magnesium is 145 pm.</em>

4 0
3 years ago
What is the difference between unconfined aquifers and confined aquifers?
Marta_Voda [28]

Answer:

A

Explanation:

Unconfined aquifers are those into which water seeps from the ground surface directly above the aquifer. Confined aquifers are those in which an impermeable dirt/rock layer exists that prevents water from seeping into the aquifer from the ground surface located directly above.

5 0
3 years ago
Other questions:
  • Gold has density of 19.3 g/cm3; how many grams of gold are in a 16.0 cm3 gold bar?
    12·1 answer
  • Why do two isotopes of an element have the same atomic number but different mass numbers?
    11·1 answer
  • What is the molarity of a solution that is made by adding 57.3 g of MgO to 500.0 mL of solutions
    12·1 answer
  • What is the location on the surface direction above the earthquake focus called
    5·1 answer
  • How many atoms are in 0.075 mol of titanium?
    11·2 answers
  • At 2.10 per gallon, how much will it cost to buy 125 liters of Costco’s premium gas
    7·2 answers
  • Which of the following can’t be separated into simpler substances or converted into another substance by chemical processes
    14·1 answer
  • when 6.0 mol of oxygen are confined in a 36L vessel at 196°c, the pressure is 8atm. what is the new pressure for oxygen expands
    13·1 answer
  • If all the deer disappeared from this community, which change would be most
    10·2 answers
  • How many moles of electrons is required to deposit 5.6g of iron from a solution of iron (2) tetraoxosulphate(6)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!