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monitta
3 years ago
9

What is the phylum of an insect?

Chemistry
1 answer:
____ [38]3 years ago
8 0
I think it might be Ecdysozoa but I’m not sure
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An atom has three full orbitals in its second energy level. How many electrons are present in the second energy level of the ato
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What elem eat is this? That has three orbitals? Usually the first orbital will contain only two electrons. The second orbital would contain four, the third would contain 16

8 0
3 years ago
Find the volume of a gas at standard pressure if its volume at 780 mm Hg is 80 ml​
Olin [163]

Answer:

0.082L or 82mL

Explanation:

Given parameters:

Pressure of gas  = 780mmHg;

                760mmHg  = 1atm

                780mmHg  = \frac{780}{760}   = 1.03atm

Volume of gas  = 80ml  = 0.08L

Standard pressure  = 1atm

Unknown:

Volume of gas   = ?

Solution:

To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of gas is inversely proportional to the pressure if the temperature is constant".

   Mathematically;

        P₁ V₁   = P₂ V₂

P and V are temperature values

1 and 2 are initial and final states;

    Insert the parameters and solve;

               1.03 x 0.08  = 1 x V₂

   V₂  = 0.082L or 82mL

8 0
3 years ago
When ch4(g) reacts with h2o(g) to form h2(g) and co(g), 206 kj of energy are absorbed for each mole of ch4(g) that reacts. write
jeka57 [31]
1) Chemical reaction: CH₄ + H₂O → 3H₂ + CO ΔH = + 206 kJ/mol.
2) Chemical reaction: CO + H₂O → CO₂ + H₂, ΔH = + 2,8 kJ/mol.
3) Chemical reaction: CH₄ + 2O₂ → CO₂ + 2H₂O ΔH = -802 kJ/mol.
4) Chemical reaction: 2H₂ + O₂ → 2H₂O ΔH = 2·(-242 kJ7mol) = - 484 kJ/mol.
Endothermic reaction (ΔH>o) and exothermic reaction (ΔH<span><0).</span>
7 0
3 years ago
Use the chemical equation below to answer the following two questions.
umka2103 [35]
3 answer for number 3.4 is the answer for number 4
8 0
4 years ago
3Mg + N2--&gt; Mg3N2 True or False: Another possible product for this reaction could be MgN2
Ganezh [65]
This is true. Because without the 3 you would need to take it out from the equation

4 0
3 years ago
Read 2 more answers
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