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Nesterboy [21]
4 years ago
12

A food web shows (2 points)

Chemistry
1 answer:
Oxana [17]4 years ago
7 0
4.) That species may have more than one source of food.
5.) Secondary consumers eat herbivores.
6.) A food chain shows how energy is transferred.
7.) A tapeworm is an example of parasitism.
8.) Commensalism is the relationship where one is happy and the other is not harmed nor benefited.
9.) Both contribute to each other so it's mutualism.
10.) The plants grow in trees and steal from them, this is parasitism.
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dolphi86 [110]
11 × 44 = 484 g

mol × molar mass
7 0
3 years ago
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What volume of 0.205 m k3po4 solution is necessary to completely react with 154 ml of 0.0110 m nicl2? 1.65 l?
sasho [114]
The balanced equation for the above reaction is 
2K₃PO₄   + 3NiCl₂  ---> 6KCl + Ni₃(PO₄)₂
stoichiometry of K₃PO₄  to NiCl₂ is 2:3
the number of NiCl₂ moles reacted - 0.0110 mol/L x 0.154 L = 1.69 x 10⁻³ mol
if 3 mol of NiCl₂ reacts with - 2 mol of K₃PO₄ 
then 1.69 x 10⁻³ mol of NiCl₂ reacts with - 2/3 x 1.69 x 10⁻³  = 1.13 x 10⁻³ mol of K₃PO₄
molarity of K₃PO₄ solution given - 0.205 M
there are 0.205 mol in 1 L
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volume of K₃PO₄ required - 5.51 mL
3 0
3 years ago
What is the concentration of a saturated solution of SrSO4? SrSO4 has a Ksp of 3.2 x 10–7
Andrej [43]
SrSo4 = Sr(2+) + SO4(2-)

Let’s say that the initial concentration of SrSo4 was 1. ( or we have 1 mole of this reagent).

When The reaction occurs part of SrSo4is dissociated. And we get X mole Sr(2+) and So4(2-).
Ksp=[Sr(2+)]*[SO4(2-)]
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5 0
3 years ago
How much work is required to lift a 0.500 kg block 18.5 m?
kipiarov [429]

Answer:

Work = 90.65 j

Explanation:

Given data:

Mass = 0.500 Kg

Distance = 18.5 m

Work done = ?

Solution:

Work = force . distance

Force = mg

Work = mg.distance

Work = mgh

Work = 0.500 Kg × 9.8 m/s²× 18.5 m

Work = 90.65 Kg .m²/s²

Kg .m²/s² = j

Work = 90.65 j

3 0
3 years ago
Why is the reaction 2Mg + O2 + 2MgO a nonreversible reaction?
IRINA_888 [86]

Answer:

d

Explanation:

7 0
3 years ago
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