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cluponka [151]
4 years ago
9

The cells of plants and algae have a hard made of cellulose

Chemistry
1 answer:
Monica [59]4 years ago
8 0
The answer is cell wall...i found it here: https://www.quia.com/jg/1351880list.html
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Use these words: inherited, instinctive, learned and traits to explain how parents can influence adaptions in their offspring.
Alexeev081 [22]
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Parents can also influence adaptations in their offspring(s) by learned activity from their parents. Learned traits from the parent(s) is an activity a parent teaches their offspring. For example, if their parent teaches their offspring how to hunt, it makes the offspring survive in their habitat environment.
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3 years ago
Read the sentence from "Black Hole Beginnings."
klasskru [66]

Answer:

is this like a abcd question cause if it is than is C

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3 years ago
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The complete combustion of copper(I) sulphide is according to the following equation:
MaRussiya [10]

Answer:

a) 7.94 x 10²³ molecules, b) 5.62 g SO2, c) 1.97 L

Explanation:

a) We need to first convert Cu2S to moles. Since molar mass of Cu2S is 159.14 g/mol, 14.0 g = 0.0880 mol. Using molar ratios (3 mol O2/2 mol Cu2S, 0.0880 mol of Cu2S = 0.132 mol O2. Since 1 mol contains 6.02 x 10²³ molecules, 0.132 mol O2 = 7.94 x 10²² molecules O2.

b) Since the molar ratios of Cu2S to SO2 is 1:1, 0.0880 mol of Cu2S produces 0.0880 mol SO2. To convert mol to grams, we use the molar mass of SO2 (64.06 g/mol) to figure out that 0.0880 mol SO2 = 5.63 g SO2.

c) At STP, 1 mol occupies 22.4 liters. 0.0880 mol SO2 x 22.4 L/1 mol = 1.97 L

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3 years ago
Which element is more dense.
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