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vekshin1
3 years ago
6

The mass number of this atom is_________​

Chemistry
1 answer:
galben [10]3 years ago
3 0

Answer:

7

Explanation:

The mass number is neutrons plus protons

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Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for dental and orthopedic use, can be
Sphinxa [80]

Answer:

P_4_{(I)}+5O_2_{(g)}+6H_2O_{(l)}\rightarrow +4H_3PO_4_{(l)}

Explanation:

The first step is:

P_4_{(I)}+5O_2_{(g)}\rightarrow 2P_2O_5_{(g)}

Second step is:

P_2O_5_{(g)}+3H_2O_{(l)}\rightarrow 2H_3PO_4_{(l)}

Multiplying second step by 2, and adding both the steps, we get that:

P_4_{(I)}+5O_2_{(g)}+2P_2O_5_{(g)}+6H_2O_{(l)}\rightarrow 2P_2O_5_{(g)}+4H_3PO_4_{(l)}

Cancelling common species, we get that:

P_4_{(l)}+5O_2_{(g)}+6H_2O_{(l)}\rightarrow +4H_3PO_4_{(l)}

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4 years ago
Is Jesus Christ real??
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4 years ago
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If a particular compound is composed of elements A and B, the ratio of the mass of B to the mass of A will always be the same. T
Mekhanik [1.2K]
This is a statement of the law of Definite Proportions. Basically what it says is that the proportions of mass will always be the same and can't be changed.
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4 years ago
Diuris are common orchids found in Australia. The flowers of this species display a large number of variations in color and mark
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From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.

<h3>Why is color a protection mechanism?</h3>

This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.

Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.

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2 years ago
Use the unbalanced equation NH3 + O2 = NO + H2O
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<span>The balance format is
4NH3+ 5O2 -------> 4NO + 6H2O </span>
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