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3 years ago

11

True or False: If the chagned offspring are more likely to endure (survive), than that traits is more likely to spread to future

generations?

1 answer:

Ivenika [448]3 years ago

7 0

Answer: i think it is true.

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4.2 g of lithium (Li) reacts with 2.8 g of nitrogen (N2). Find the simplest molar ratio in which lithium reacts with nitrogen.

o-na [289]

The simplest molar ratio in which lithium reacts with nitrogen is 6 moles of lithium to 1 mol of nitrogen.

What is molar ratio?

A molar ratio examines the ratio that exist between two chemical compounds showing the amounts in moles of the compounds involved in a chemical reaction.

Molar ratio = amount of a constituent in moles ÷ total amount of all constituents in a mixture in moles

Given:

Mass of lithium (Li) = 4.2 g

Mass of nitrogen (N2) = 2.8 g

Total amount of mass = 7g

Moles = molecular weight ÷ mass of water

Moles of lithium (Li) = 4.2 ÷ 7 = 0.60 mol

Moles of nitrogen (N₂) = 2.8 ÷ 7 = 0.10 mol

Therefore, ratio Li : N₂ = 0.60 : 0.10 = 6 : 1

6 Li + N₂

The balanced equation between lithium and nitrogen, to form lithium nitride = 6 Li + N₂ → 2 Li₃N₆L i + N₂ → 2Li₃N

In summary, the simplest molar ratio in which lithium reacts with nitrogen is 6:1

Learn more about molar ratio here: brainly.com/question/14677248

#SPJ1

8 0

1 year ago

What mass of water (H2O)will be collected if 20.0 grams of oxygen gas(H2) are consumed

anastassius [24]

Explanation:

no.mole of H2= mass/RAM

=20/2(2)

=5mol

no.mole of H20=mass/RAM

=5molx2(2+16)mol/g

=180g

5 0

3 years ago

Which symbol is generally used to represent a sugar in simple models of nucleotides?

Bumek [7]

The sugar that occurs in nucleotides tends to be a 5 carbon sugar called ribose or deoxyribose and tends to be represented by a pentagon of 5 carbons joined to oxygen and OH to form part of the helix forming nucleic acids. The nucleotides are what constitutes the DNA and RNA which control genetic characteristics.

3 0

3 years ago

The elements in alkali metal and halogen groups of the periodic table are the most reactive since they only need to gain or lose

Anarel [89]

<h3>Answer:</h3>

Reactivity increases because the valence level is further from the nucleus of an atom.

<h3>Explanation:</h3>

The reactivity of elements in the periodic table depends on the position of the element in the periodic table.
The trend in the reactivity across the period and down the group depends on whether one is dealing with metallic elements or non-metallic elements.
Reactivity of metals such as alkali metals and alkali-earth metals increases down the group as the number of energy levels increases making valence electrons to be further from the nucleus.
Reactivity of non-metallic groups such as halogen decreases down the group as energy levels increase which reduces the nuclear attraction of the valence electrons to the nucleus.

4 0

3 years ago

A chef finds a sealed container consisting of an ingredient that goes into his restaurant’s secret sauce. The ingredient’s molec

ozzi

The ingredient's molecules would be more free and move faster, then the phase would change to liquid from solid.

<u>Explanation</u>:

This task seeks to examine the knowledge of the kinetic phase and characteristics of matters.

Here we see the chef described that the ingredient's molecules are moving in place – solid.

On the advent of causing the ingredient to change phase by transferring energy into it – the ingredient's molecules would be more free and move faster, then the phase would change to liquid from solid.

6 0

3 years ago