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Karolina [17]
3 years ago
7

Food web diagrams the interactions between organisms based on which organisms others are eating. A scientist is using a food web

to predict the predator-prey relationship of a population. What can a food web best be classified as?
A. a mean
B. a graph
C. a model
D. a range
Chemistry
1 answer:
Alexxandr [17]3 years ago
7 0

Answer:

model

Explanation:

edge 2020

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suggest two observations that you can make when Calcium reacts with water and write a balanced equation for the reaction of calc
Kamila [148]

• Bubbles of a colourless, odourless gas are evolved

• The solution turns red litmus blue

       Ca + 2H_2O→ Ca(OH)_2 + H_2

8 0
3 years ago
Calculate the slope of each line using the points given. (25.6cm³ , 28.16g), (17.3cm³, 19.03g)
fiasKO [112]

Answer:

1.1

Explanation:

The slope of a line can be calculated using the values of the x and y corrdinates. The equation is given as;

M = ΔY /  ΔX = Y2 - Y1 / X2 - X1

From the points;

(25.6cm³ , 28.16g) - (X1, Y1)

(17.3cm³, 19.03g) - (X2,  Y2)

Inserting the values into the equation;

M = 19.03 - 28.16 /  17.3 - 25.6

M = -9.13 / -8.3 = 1.1

3 0
3 years ago
A sample of a chromium-containing alloy weighing 3.450 g was dissolved in acid, and all the chromium in the sample was oxidized
Zina [86]

Answer:

H_2O + 2CrO_4^2- + 3SO_3^2- -> 3SO_3^2- + 2CrO_2^- + 2OH^-

Explanation:

Reduction half reaction

2H_2O + CrO_4^2- + 3e -> CrO_2^- + 4OH^-

Oxidation half reaction

2OH^- + SO_3^2- -> SO_4^2- + H_2O + 2e

Balanced overall equation

H_2O + 2CrO_4^2- + 3SO_3^2- -> 3SO_3^2- + 2CrO_2^- + 2OH^-

 

5 0
3 years ago
How are natural polymers and synthetic polymers similar?
Anna [14]

Answer: C) Both are made up of monomers that are linked by covalent bonds

Explanation: Polymers are large molecules which are formed by combination of small repeating units called as monomers.

Natural polymers are found in nature such as cellulose whereas synthetic polymers are synthesized in laboratories such as Nylon 6,6.

All the polymers, whether natural or synthetic are made up of monomers and are joined by covalent bonds.


4 0
3 years ago
Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.
Harman [31]

Can you please add a picture of the case??

5 0
2 years ago
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