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
Drupady [299]
4 years ago
11

Alkaline earth metals do not react with oxygen. true or false

Chemistry
1 answer:
elena-s [515]4 years ago
3 0
False. Alkaline earth metals react with oxygen.
You might be interested in
Rank the species CH2NH, CH3I, HF, C2H6 from most to least miscible in ammonia (NH3) 1. CH3I > C2H6 > HF > CH2NH 2. CH2N
777dan777 [17]

Answer:

HF>CH_{2}NH>CH_{3}I>C_{2}H_{6}

Explanation:

NH_{3} is an weak base. HF is an weak acid. Hence an acid-base reaction will ocuur between NH_{3} and HF resulting a homogeneous mixture.

NH_{3} is a polar protic molecule. Hence it can form hydrogen bonding with another polar protic molecule CH_{2}NH. Also dipole-dipole attraction force along with london dispersion force exists between CH_{2}NH and NH_{3}.

CH_{3}I is a polar molecule. Hence only dipole-dipole attraction force along with london dispersion force operates between CH_{3}I and NH_{3}.

C_{2}H_{6} is a non-polar molecule. Hence only london dispersion force exists between C_{2}H_{6} and NH_{3}.

So, order of miscibility: HF>CH_{2}NH>CH_{3}I>C_{2}H_{6}

                                   (most)                                (least)

5 0
3 years ago
What is hydrogen bond??
klio [65]

A hydrogen bond is formed by attraction between + and - charges on different water molecules.

Basically, it is the bond between two atoms that already participate in other chemical bonds. Hydrogen bonds may form between atoms within a molecule or between two separate molecules.

6 0
4 years ago
Read 2 more answers
32.7 grams of water vapor takes up how many liters at standard temp and pressure (273 K and 100 kPa)
lana [24]
You just need to convert the mass in grams to number of moles and use the ideal gas equation, pV = n RT

where p = 100 kPa, T = 273 K, V is the volume searched, n is the number of moles and R is the unviersal constant of gases = 8.314 J / K * mol

1) Number of moles = mass in grams / molar mass

=> n = 32.7 g / 18.0 g/mol = 1.81667 moles

2) pV = nRT => V = nRT / p

V = 1.81667 moles * 8.314 (liter*KPa /k*mol) * 273K / (100 KPa) = 41.2 liter

Answer: 41.2 liters
3 0
4 years ago
An atom has 24 protons, 22 electrons, and 28 neutrons. What is the MASS # of the atom
sleet_krkn [62]

The mass of an atom is given by the sum of the number of PROTONS and the number of NEUTRONS since ELETRON'S mass is negligible.

The mass is 24+28 = 52.

4 0
3 years ago
The graph shows that the ________ have more potential energy than the ______.
aniked [119]

Answer:

B products, reactants

Explanation:

The energy of the reactants is the leftmost letter on the graph given by A, and the energy of the products are given by the rightmost letter on the graph, C.

C is higher in energy than A since it is higher on the diagram, and thus it has more energy. This means the products have more energy than the reactants.

5 0
2 years ago
Other questions:
  • For a spontaneous process, which of the following MUST be true?
    14·1 answer
  • What is the mass of 5.31×1021 platinum atoms?
    5·2 answers
  • Write the reaction when solid aluminum sulfate is put into water:
    14·2 answers
  • When HBr combines with water, it produces H3O+ and Br- ions. This shows that HBr is a base. true false
    8·2 answers
  • Which two terms?First to answer (correct) g
    8·1 answer
  • Number of molecules of oxygen produced along with one molecule of sugar
    10·1 answer
  • Write 0.000000093425 in Scientific Notation with 4 significant figures.
    5·2 answers
  • Why is 1g of cobalt oxide nanoparticles a better catalyst than 1g of cobalt oxide powder?
    13·1 answer
  • 3. Could a molecule<br> contain only one atom?
    11·1 answer
  • What does each letter mean in the acronym pufart mean
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!