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olga55 [171]
2 years ago
15

What represents a community? pond B a snail snails D snails, guppies and plants

Chemistry
1 answer:
OLga [1]2 years ago
7 0

D snails, guppies and plants. The community should be diverse and have lots of biodiversity.

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Stoichionetry Quiz
Maru [420]

Answer:

a

Explanation:

first form your equation and it is C3H8+5O2-4H2O+3CO2 44g of C3H8 produce 3moles of CO2/400g of C3H8 produce x the answer is 27.27moles when you cross multiply

4 0
3 years ago
Roland is measuring a physical property of an object. He records the measurement:
Vsevolod [243]

Answer:

The correct answer is density. See the explanation below, please.

Explanation:

Roland measured density, which is a property that relates mass to volume, having units for example: grams / cm3

3 0
3 years ago
A chemist who studies water samples did a demonstration of how to test for lead in water. She added a clear solution of potassiu
Lerok [7]

Answer:

The swirling yellow solid formed is lead iodide (PbI₂).

Explanation:

  • The reaction of potassium iodide (KI) with lead nitrate (Pb(NO₃)₂) will produce lead iodide (PbI₂) and potassium nitrate (KNO₃) according to the equation:

2KI + Pb(NO₃)₂ → PbI₂↓ + 2KNO₃

  • Lead iodide (PbI₂) is a yellow swirling precipitate that is formed from the reaction.
3 0
3 years ago
Read 2 more answers
What is the conversion of 85.0kg
mina [271]

Answer:

85

Explanation:

6 0
3 years ago
Which of the following statements is false concerning the formula of a compound?
aalyn [17]

Answer:

B. The number of atoms in a molecular formula is always greater than the number of atoms in an empirical  formula.

Explanation:

It is not always true that the number of atoms in a molecular formula is always greater than the number of atoms in an empirical formula.

The chemical formulae of a compound are of two main types;

  • The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio.
  • The molecular formula shows the actual ratio of the atoms in a compound.

Sometimes the number of atoms in the molecular and empirical formula can be the same.

Also, the number of atoms in the molecular formula is always greater than that of the empirical formula when they are not the same.

3 0
3 years ago
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