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Vitek1552 [10]
3 years ago
14

The part of the leaf containing the xylem and phloem is the:

Chemistry
1 answer:
Katena32 [7]3 years ago
6 0

Answer:

cortex

Explanation:

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What sample size (grams) of Na3PO4 (FW 164.00) known to be 50.00% pure should be used to consume exactly 40.00 mL of 0.1000 M HC
Mkey [24]

Answer:

0.109 g.

Explanation:

Equation of the reaction:

Na3PO4 + 3HCl --> 3NaCl + H3PO4

Number of moles of HCl = molar concentration × volume

= 0.1 × 0.04

= 0.004 mol.

By stoichiometry, 1 mole of Na3PO4 neutralises 3 moles of HCl. Therefore, number of moles of Na3PO4 = 0.004/3

= 0.0013 mol

Mass of Na3PO4 = molar mass × number of moles

= 0.0013 × 164

= 0.219 g

Since 50% of Na3PO4 was present in the sample. Let 100 g be the total mass of the substance

= 0.219 × 50 g/100 g

= 0.109 g.

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3 years ago
What is the element presented, in this compound?
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water H2O hydrogen (H) and oxygen (O)

ammonia NH3 nitrogen (N) and hydrogen (H)

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carbon dioxide CO2 carbon (C) and oxygen (O)

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3 years ago
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Need help plz help any one
dimulka [17.4K]
Hi!

Composition: the way in which a whole is made up

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Answer questions based on the lab activity.
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I will give you Brainly if you awser correct if your gonna awser for points pl put I don’t know
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