Draw this image below. It shows one ton of feathers and one ton of bricks a. Compare the mass of the two substances: b. Compare the volume of the two substances:
C. Which of the two substances will have a greater density?
d. Why? Your explanation must include the terms "mass" and "volume", and it must include the definition you provided in #2
Answers
I don't understand the question
Can you elaborate further
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What is an extensive property? *A property that changes if temperature changesA property that will NOT change if temperature changesA property that changes if the amount of substance changesA property that does NOT change if the amount of substance changesHelp :( pls
15) What is the hydronium ion concentration [H3O + ] of a 0.125 M hydrocyanic acid solution with Ka = 4.9 × 10-10? The equation for the dissociation of hydrocyanic acid is: HCN(aq) + H2O(l) ⇌ H3O+(aq) + CN- (aq)
50.0ml each of 1.0M Hcl and 1.0M Naoh at room temperature (20.0c) are mixed the temperature of the resulting Nacl solutions increase to 27.5cthe density if the resulting Nacl solutuion 1.02 g/mlthe specific heat of the resulting Nacl solutions is 4.06j/gccalculate the heat of neutralisation of hcl and naoh in kj/mol nacl products
Predict the products and write balanced net ionic equations for the following reactions. (g) SnCl2 is added to KMnO4 solution (acidic) forming Mn2
Answers
Answer:
b) Cu2+
Explanation:
- information sheet for solubility constants:
Ksp PbS = 3.4 E-28
Ksp CuS = 6.0 E-37
- PbS ↔ Pb2+ + S2-
∴ Ksp = 3.4 E-28 = [ Pb2+ ] * [ S2- ]
∴ [ Pb2+ ] = 0.10 M
⇒ [ S2- ] = 3.4 E-28 / 0.10 = 3.4 E-27 M
- CuS ↔ Cu2+ + S2-
∴ Ksp = 6.0 E-37 = [ Cu2+ ] * [ S2- ]
∴ [ Cu2+ ] = 0.10 M
⇒ [ S2- ] = 6.0 E-37 / 0.10 = 6.0 E-36 M
we have:
(1) [ S2- ] PbS >> [ S2- ] CuS
(2) Ksp PbS >> Ksp CuS
from (1) and (2) it can determined, that separation can be carried out and also the cation that precipitates first is the Cu2+
O True
O False
Answers
thank me later
Answer:
False
Explanation:
It depends on wixh kid of light is it
Example
Sun light difders from lamp light
Answers
Answer:
The polar compounds are soluble in water while non polar are insoluble in water.
Explanation:
Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute. In simplest form it is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.
Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.
Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.
Example:
when we stir the sodium chloride into water the cation Na⁺ ions are surrounded by the negative end of water i.e oxygen and anion Cl⁻ is surrounded by the positive end of water i.e hydrogen and in this way all salt is get dissolved.
The chemicals that can dissolve in a certain solvent to create a homogenous mixture known as a solution are said to be soluble chemicals. The compounds that are soluble are: ,
, and
.
As per this,
- Nitrate (
) salts are often soluble in water.
is potassium nitrate.
- The majority of nitrate (
.
- The majority of bromide (
) salts, including copper(II) bromide, are water soluble.
Insoluble:
- Lead(II) chloride, or
, is an exception and is regarded as being insoluble in water among the chloride (
) salts.
- Barium sulphate, also known as BaSO4, is an exception to the rule of most sulphate (
) compounds being soluble in water.
Thus, these are the classification of the compounds as per their solubility.
For more details regarding solubility, visit:
#SPJ6
Your question seems incomplete, the prpbable complete question is:
Predict whether the following compounds are soluble or insoluble in water. Soluble Insoluble PbCl2, BaSO4, KNO3, AgNO3, and CuBr2.
Answers
Answer:
Solution is 4.67% by mass of salt
Explanation:
% by mass is the concentration that defines the mass of solute in 100g of solution.
In this case we have to find out the mass of solution with the data given:
Mass of solution = Mass of solute + Mass of solvent
Solute: Salt → 14.2 g
Solvent: Water → 290 g
Solution's mass = 14.2 g + 290g = 304.2 g
% by mass = (mass of solute / mass of solution) . 100
(14.2 g / 304.2g) . 100 = 4.67 %
Which of the following statements are correct?
Choose all that apply.
ΔGo > 0
The reaction is product-favored.
K < 1
Eocell > 0
n = 2 mol electrons
B-
Answers
Answer:
Eªcell > 0; n = 2
Explanation:
The reaction:
I2 (s) + Pb (s) → 2 I- (aq) + Pb2+ (aq)
Is product favored.
A reaction that is product favored has ΔG < 0 (Spontaneous)
K > 1 (Because concentration of products is >>>> concentration reactants).
Eªcell > 0 Because reaction is spontaneous.
And n = 2 electrons because Pb(s) is oxidizing to Pb2+ and I₂ is reducing to I⁻ (2 electrons). Statements that are true are:
Eªcell > 0; n = 2
Answers
Answer:
Polarity
Cohesion
Adhesion
High Specific Heat
Explanation: