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
qwelly [4]
3 years ago
9

List the exceptions to Metals showing a high density?

Chemistry
1 answer:
Bumek [7]3 years ago
7 0

Answer:

Osmium, 22.6 g/cc.

Iridium, 22.4 g/cc.

Platinum, 21.45 g/cc.

Rhenium, 21.2 g/cc.

Uranium, 20.2 g/cc.

these are are metals having a high density

Explanation:

You might be interested in
How many liters would be equal to 19 milliliters
zloy xaker [14]
0.019 Hope this helps! :)
6 0
3 years ago
What are microorganisms?
Zepler [3.9K]

Answer:

A microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or a colony of cells.

Explanation:

6 0
3 years ago
150 ml of 0.1 m naoh is added to 200 ml of 0.1 m formic acid, and water is added to give a final volume of 1 l. what is the ph o
N76 [4]

Number of moles of NaOH = V(NaOH) * M(NaOH)= 0.150 L * 0.1 moles/L = 0.015 moles

Number of moles of formic acid, HCOOH = V(HCOOH) * M(HCOOH) = 0.200 L * 0.1 moles/L = 0.020 moles

Here, the limiting reagent is NaOH

The reaction is represented as:

HCOOH + NaOH ↔HCOONa + H2O

Moles of HCOONa formed = Moles of the limiting reagent, NaOH = 0.015 moles

Moles of HCOOH remaining = 0.020-0.015 = 0.005 moles

Total final volume is given as 1 L

Therefore: [HCOOH] = 0.005 moles/1 L = 0.005 M

[HCOONa] = 0.015/1 = 0.015 M

pKa of HCOOH = 3.74

As per Henderson-Hasselbalch equation

pH = pka + log[HCOONa]/[HCOOH] = 3.74+log[0.015/0.005] = 4.22

Therefore, pH of the final solution = 4.22


                       


3 0
3 years ago
It takes 11.2 kj of energy to raise the temperature of 145 g of benzene from 22.0°c to 67.0°c. what is the specific heat of benz
Cloud [144]
We can use the heat equation,
Q = mcΔT 

where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).
Q = 11.2 kJ = 11200 J
m = <span>145 g
</span>c = ?
ΔT = (67 - 22) °C = 45 °C
By applying the formula,
11200 J = 145 g x c x 45 °C
           c = 1.72 J g⁻¹ °C⁻¹

Hence, specific heat of benzene is 1.72 J g⁻¹ °C⁻¹.
7 0
3 years ago
Chlorine and potassium atoms form ionic bonds, carbon atoms form non-polar covalent bonds with nitrogen atoms, and oxygen forms
Ray Of Light [21]

Explanation:

A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals.

An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal.

Chlorine and potassium atoms form ionic bonds: Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal.  Electronegativity difference = electronegativity of chlorine - electronegativity of potassium = 3-0.8 = 2.2

Carbon atoms form non-polar covalent bonds with nitrogen atoms : Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms.  Electronegativity difference  = electronegativity of nitrogen  - electronegativity of carbon= 3.0-2.5 = 0.5

Oxygen forms polar covalent bonds with phosphorus: A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.  Electronegativity difference = electronegativity of oxygen - electronegativity of phosphorous = 3.5- 2.19 = 1.31

5 0
3 years ago
Other questions:
  • How does radiocarbon (or uranium) dating help us better understand the world
    15·1 answer
  • Why are carboxylic acids more acidic than alcohols or alkynes? (choose all that apply)
    10·1 answer
  • What is the ETD and CID in mass spectrometry? What are the differences between ETD and CID?
    5·1 answer
  • SO2+O2 SO3 how many moles of O2 needed to combust 100.0g of sulfur dioxide
    15·1 answer
  • A chemist studies two forms of gasoline. Which of the following branches of chemistry might the chemist use?
    14·2 answers
  • Jessie has never seen snow, but today the weather conditions may be just right! He knows the temperature on the Fahrenheit therm
    8·2 answers
  • What is the law of conservation on mass?
    14·2 answers
  • Cyclohexane, a commonly used organic solvent, is 85.6% c and 14.4% h by mass with a molar mass of 84.2 g/mol. what is its molecu
    12·1 answer
  • Suppose you have 11.0 mol of (CH4) and 9.0 mol of (O2) in a reactor. Calculate the largest amount of CO2 that could be produced
    10·1 answer
  • What is the pressure of the sample of gas trapped in the open-tube mercury manometer shown below if atmospheri pressure is 767 m
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!