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
Inessa [10]
3 years ago
11

Imagine that all microorganism suddenly disappeared from earth from what u have learned why do u think that animals would eventu

ally disappeared from earth? Why would plant disappeared
Chemistry
1 answer:
weeeeeb [17]3 years ago
7 0

Answer:

bugging milftoon comic milftoon comic milftoon cimicd how many to summon a transgender milftoon cimicd how

You might be interested in
Consider the reaction ch3oh(l)→ch4(g)+1/2o2(g). part a calculate δrh∘298.
Vsevolod [243]
To determine the standard heat of reaction, ΔHrxn°, let's apply the Hess' Law.

ΔHrxn° = ∑(ν×ΔHf° of products) - ∑(ν×ΔHf° of reactants)
where
ν si the stoichiometric coefficient of the substances in the reaction
ΔHf° is the standard heat of formation

The ΔHf° for the substances are the following:
CH₃OH(l) = -238.4 kJ/mol
CH₄(g) = -74.7 kJ/mol
O₂(g) = 0 kJ/mol

ΔHrxn° = (1 mol×-74.7 kJ/mol) - ∑(1 mol×-238.4 kJ/mol)
ΔHrxn° = +163.7 kJ
8 0
3 years ago
Read 2 more answers
Rank the following in terms of increasing first ionization energy. 1. Na, Mg, N, O, F 2. O, N, F, Na, Mg 3. F, O, N, Mg, Na 4. F
ololo11 [35]

Answer:

attached below

Explanation:

3 0
3 years ago
What makes calcium and nitrogen different list two differences
liberstina [14]

Answer:

the difference in electronegativity is so large (2.04) that the bonding electrons spend almost all their time on the nitrogen atom.

Explanation:

Because calcium loses 2 electrons to become Ca2+, and nitrogen gains 3 electrons to become N3−, you need two calcium atoms and three nitrogen atoms in order to form a neutral compound.

6 0
3 years ago
The movement of molecules across a membrane from an area of high concentration to one of low concentration is best described as:
mestny [16]

Answer:

Difussion

Explanation:

Diffusion is the result of a totally random phenomenon in which the molecules of a fluid come and go between two vessels that can be connected by a pipe. These molecules travel in a single direction, where the solute is more concentrated to where it is more diluted.

This movement of particles will be modified according to the length or area of ​​the pipe and the concentration of solute. The greater the difference in solute concentration along the tube, the greater the diffusion

6 0
3 years ago
To determine the concentration of an EDTA solution, 4.11 g of Zn metal was used. The volume of EDTA solution needed to reach the
USPshnik [31]

Answer:

2.23M

Explanation:

Molarity of a solution is calculated thus

Molarity = number of moles (n) ÷ volume (V)

According to this question, 4.11g of Zn metal was used in order to reach a volume of EDTA solution of 28.26 mL.

28.26mL = 28.26/1000

= 0.02826L

Using mole = mass/molar mass to calculate no. of moles of Zn

Mole = 4.11/65.4

mole = 0.0628mol

Molarity = 0.0628 ÷ 0.02826

Molarity = 2.23M

The concentration of the EDTA solution used is 2.23M

7 0
3 years ago
Other questions:
  • Convert 7.680 moles of PtSe to grams
    15·1 answer
  • How many molecules are in 0.26 mol of CO2
    14·1 answer
  • For the equilibrium: 2 NO (g) <----> N2(g) + O2 (g), Kp=2400. If initially, only NO is present at a partial pressure o
    14·2 answers
  • Why is water essential to living things? (1 pc
    5·1 answer
  • How many moles of H2O will be formed from the reaction of 80 g of
    13·1 answer
  • 1) The heat of combustion for the gases hydrogen, methane and ethane are −285.8, −890.4 and −1559.9 kJ/mol respectively at 298K.
    7·1 answer
  • Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South America. Quinine is used as
    9·1 answer
  • When elements form bonds, it changes their ______ properties.<br>The answer is..? ​
    11·1 answer
  • When Nitrogen gas gets cold enough it can form a liquid. This liquid nitrogen is an
    6·1 answer
  • True or false. for all atoms of the same element the 4s orbital is larger than the 3s orbital
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!