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
Vlad1618 [11]
3 years ago
6

What characteristics separate the class Insecta from other classes of the phylum Arachnida

Chemistry
1 answer:
inna [77]3 years ago
5 0

Answer:

Three pairs of walking legs, wings, body divided into three segments, pair of sensory antennae.

Explanation:

You might be interested in
The boiling point of a solution with a non-volatile solute is higher than that of the pure solvent . True or false
RUDIKE [14]
True because
 it is
.......
6 0
3 years ago
A sample containing 2.30 mol of Ne gas has an initial volume of 8.00 L. What is the final volume, in liters, when the following
marta [7]

Answer:

a. 4,00L

b. 16,00L

c. 12,31L

Explanation:

Avogadro's law says:

\frac{V_1}{n_1} =\frac{V_2}{n_2}

a. If initial conditions are 2,30mol and 8,00L and you lose one-half of atoms, that means you have 1,15mol:

\frac{8,00L}{2,30mol} =\frac{V_2}{1,15mol}

<em>V₂ = 4,00L</em>

b. If initial conditions are 2,30mol and 8,00L and you add 2,30mol, that means you have 4,60mol:

\frac{8,00L}{2,30mol} =\frac{V_2}{4,60mol}

<em>V₂ = 16,00L</em>

c. 25,0g of Ne are:

25,0g × (1mol / 20,1797g) = 1,24 moles of Ne. That means you have 2,30mol - 1,24mol = 3,54mol of Ne

\frac{8,00L}{2,30mol} =\frac{V_2}{3,54mol}

<em>V₂ = 12,31L</em>

I hope it helps!

6 0
3 years ago
Which compound is an Arrhenius base?
Dmitry_Shevchenko [17]
I was hoping that some choices would be given to choose from. As there are no choices given, so i am answering the question based on my knowledge and hope that it comes to your help. Calcium hydroxide is a good example of Arrhenius base. An Arrhenius base is actually a substance that releases a hydroxyl ion in water.
3 0
3 years ago
A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. how many kcal of ene
Burka [1]
I believe the answer is D
3 0
3 years ago
What element behaves MOST like magnesium <br> between Si, S, Sr, Sn
frosja888 [35]

<u><em>Answer</em></u>

  • Sr

<u><em>Explanation</em></u>

  • In periodic table, the elements have almost same properties are present in the same group. As Mg and Sr are present in group II-A, so both behave most likely to each other due to having same valence shell electrons as well.
  • Si and Sn are present in group IV-A which have same behavior but different one from Mg due to different groups.
  • S is present in group VI-A which show different properties from all others one especially from Mg.
6 0
3 years ago
Read 2 more answers
Other questions:
  • An atom is composed of protons, neutrons, and electrons. What is the electric
    13·1 answer
  • Please help thaank youu
    9·1 answer
  • An experimenter found that for the hydrolysis of lactose, ΔH° = +0.44 kJ mol–1 and ΔS° = +0.031 kJ mol–1 K–1. ΔG°for this reacti
    8·1 answer
  • When 1.045 g of CaO is added to 50.0 mL of water at 25.0 °C in a calorimeter, the temperature of the water increases to 32.3 °C.
    15·1 answer
  • Which is a radical? <br><br>A. O<br>B. H<br>C. OH<br>D. H2O​
    14·1 answer
  • Astrology is the study of how the positions of the stars and movements of the planets influence the lives and behaviors of peopl
    11·2 answers
  • Who's theory states that atoms are made up of empty space with electrons around a positively charged mass?
    5·1 answer
  • Which term should replace the question mark?
    6·1 answer
  • A) Calculate the molar mass of ethanol, C2H5OH and water, H20.<br> C2H5OH =<br> H2O =<br> I
    9·1 answer
  • What does a high melting point temperature indicate about a substance?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!