All categories

2 years ago

Can you please help me(50 points)

Chemistry

1 answer:

Kobotan [32]2 years ago

3 0

Answer:

P=15

N=59

Explanation:

If the bottom number is 74 (pic is blurry)

You might be interested in

A reaction occurs when one compound reacts and is broken down into different elements or simpler compounds.

Inessa [10]

Answer:

Decomposition Reaction

Explanation:

If you are referring to what type of reaction that occurred then the answer would be decomposition reaction.

This is a chemical reaction where one reactant is broken down into two or more products.

REACTANT → PRODUCT

AB → A + B

The products can be two or more elements or two or more compounds, depending on what was decomposed.

3 0

3 years ago

Read 2 more answers

An aqueous solution of sodium sulfide is allowed to react with an aqueous solution of magnesium chloride.

olya-2409 [2.1K]

Answer : The correct option is, (b) $2Na^+$

Explanation :

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

Net ionic equation : In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The balanced molecular equation will be,

$Na_2S(aq)+MgCl_2(aq)\rightarrow 2NaCl(aq)+MgS(s)$

The complete ionic equation in separated aqueous solution will be,

$2Na^+(aq)+S^{2-}(aq)+Mg^{2+}(aq)+2Cl^{-}(aq)\rightarrow 2Na^+(aq)+2Cl^{-}(aq)+MgS(s)$

In this equation the species $Na^+\text{ and }Cl^{-}$ are the spectator ions.

Hence, the complete ionic equation contains specie is $2Na^+$

4 0

3 years ago

Read the information about the three atoms given in the table. Which of them are isotopes of each other?

skelet666 [1.2K]

<span>The option A is correct answer. The isotopes are X and Y. The isotopes are those which have same atomic number but different mass number. Since atomic number has same number of protons or electrons. Thus, isotopes have same number of protons or electrons. Therefore, X and Y are isotopes.</span>

4 0

4 years ago

Read 2 more answers

Is water wet? This is a discussion for easy points so I suggest you answer it.

marishachu [46]

Yes , water is wet lol

7 0

3 years ago

Read 2 more answers

A certain shade of blue has a frequency of 7.18 × 1014 Hz. What is the energy of exactly one photon of this light?

timurjin [86]

E=hv h = 6.626 × 10^-34 joule·s v=frequency i got 4.7636x10^-30 J

3 0

3 years ago