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elena-s [515]
3 years ago
14

Fossils can be body parts of ancient organisms, or they can be traces. Give five examples of traces. Help this is due today!!!!!

7 grade
Chemistry
1 answer:
SSSSS [86.1K]3 years ago
6 0

Burrows, tracks, coprolites, nests and footprints are examples of traces that can be found in a fossil.

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Answer:

A. 18

Explanation:

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lbvjy [14]

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6 0
3 years ago
How many moles are in 50 g of CO2
murzikaleks [220]

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1.1 mol

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8 0
2 years ago
How many grams of tris (mw 121.1) would you need to prepare 100 ml of a 100 mm tris solution? _________ grams?
Tems11 [23]

Molarity = (Mass/ molar mass) x (1/ volume of solution in Litres)

Mass = Molarity x molar mass x  volume of solution in Litres

Molarity of Tris = 100 mM = 0.1 M

volume of Tris sol. = 100 mL = 0.1 L

molar mass of Tris = 121.1 g/mol

Hence,

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= 1.211 g

mass of Tris = 1.211 g


7 0
3 years ago
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