NaCl + NH3 + CO2 + H20 NaHCO3 + NH4CI
Which Lewis electron-dot diagram correctly represents the reactant containing nitrogen in the equation?

Answer:

In one shot of expresso, there are:

4.12 x 10^-3 moles of C atoms

5.15 x 10^-3 moles of H atoms

2.06 x 10^-3 moles of N atoms

1.03 x 10^-3 moles of O atoms

The moles of carbon and hydrogen present in the caffeine in one shot of espresso are 4.11×  10⁻³moles and 5.14×  10⁻³moles respectively.

A mole is just a measuring scale. In reality, it is one of the International System for Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. The levels at which chemical reactions frequently occur exclude the use of grams, yet utilizing actual numbers of atoms, molecules, or ions would also be unclear.

6.02 x 1023 chemistry instructors make up a mole. Anytime we want to make a reference to a lot of different things, it is much simpler to type the word "mole" rather than the number "6.02x1023." In essence, it is the reason this specific unit was created.

caffeine in a shot of espresso = 1.00 × 10² mg/1000=0.1g

mole of caffeine =0.1g÷ 194.19g/mol

                           =5.149× 10⁻⁴mole

moles of carbon =8×5.149× 10⁻⁴

                           = 4.11×  10⁻³moles

moles of carbon = 10× 5.149× 10⁻⁴

                           =5.14×  10⁻³moles

Therefore, the moles of carbon and hydrogen present in the caffeine in one shot of espresso are 4.11×  10⁻³moles and 5.14×  10⁻³moles respectively.

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Answer:

ammonia 11

HCL. 2

sodium hydroxide 12

NAcl =7

ethanoic acid =3

Answer:

the answer is  A  because  when something is going straight  it wont change unless its acted  upon by a force

Explanation:

Answer:

Krypton. Atomic Mass. 83.80u. Electron Configuration. [Ar]4s23d104p6.

Atomic Mass: 83.80u

Electron Configuration: 4s23d104p6

Year Discovered: 1898

Answer:60

Explanation:

60 is 60 is 69 to the l the b i like eating j wek;gnl

Answer:

D

Explanation:

Answer:

D

Explanation:

Answer:

D.CaCl2

Explanation:

Answer:

Answer:

D.

Explanation:

The reaction is losing potential energy, which means that the reaction is losing that energy as heat. Exothermic is the loss of energy. Therefore it will be D.

Answer:

[tex]q=8\times 10^{-19}\ C[/tex]

Explanation:

Given that,

The charge of a single proton is [tex]1.6\times 10^{-19}\ C[/tex]

There are 5 protons in the nucleus. The nuclear charge of an atom of boron is given by :

[tex]q=5\times 1.6\times 10^{-19}\\\\q=8\times 10^{-19}\ C[/tex]

So, the required charge is [tex]8\times 10^{-19}\ C[/tex].

Answer:

255 amu has relative abundance 67.5% and 257 has relative abundance 32.5%

Explanation:

Average atomic mass =sum of product of atomic mass and relative abundance all divided by hundred or total abundance

Answer:

Both similes and metaphors are a poetic device because authors can be seen using them while writing their poem to give the reader a deeper understanding of the character and the setting. Metaphor is a figure of speech that talks about one this but refers to another. On the other hand, a simile is a figure of speech that compares two things together. Usually using the work "like" or "as".

Hoped it helped! Have a great day!

Answer:

Selenium

Explanation:

Answer:

One principle of the cell theory is that living things are made up of one or more cells.

Explanation:

Answer:

B.

Explanation:

Atoms make up molecules and ionic bonds cannot make up a molecule because they do not share electrons like in a covalent bond.

Explanation: Formula and structure: Calcium oxide chemical formula is CaO and its molar mass in 56.0774 g mol-1. The molecule is formed by the calcium cation Ca+2 and the oxygen anion O-2, which form a ionic bond. The calcium oxide ionic lattice is cubic and similar to NaCl lattice, with an ion surrounded by 6 opposite charge-ion.

Answer:

D. 3Mg + N2

Explanation:

magnesium nitride will decompose to form elemental magnesium and nitrogen gas

Mg₃N₂  → Mg + N₂

The reaction now needs to be balanced So that the number of Mg and N atoms in the reactants is equal to that of the products

Answer:

single displacement

Explanation:

Answer:

q=m*c*•

Explanation:

•=50-2

m=25

c=4.18

q=?

use this

Answer:

The half-life of Th-232 is 1.4 ∙ 10¹⁰ years.

Answer:

Two objects are in thermal equilibrium if they are in close contact that allows either to gain energy from the other, but nevertheless, no net energy is transferred between them. Even when not in contact, they are in thermal equilibrium if, when they are placed in contact, no net energy is transferred between them.

Explanation:

hope this helps chloe

Answer:

yes they do because is it quite into te aspects of ciencia

Answer:

its B, E, F

Explanation:

on edge 2021

Answer:

2. Doug supervises Jailers and makes sure their work meets standards.

5. Rudy monitors people who are on probation and parole.

6. Nancy guards inmates in a prison.

Answer:

false

Explanation:

Answer:

Fundamental force, also called fundamental interaction, in physics, any of the four basic forces—gravitational, electromagnetic, strong, and weak—that govern how objects or particles interact and how certain particles decay.

Answer:

It becomes negative

Explanation:

protons carry a positive charge

neutrons carry a neutral charge

electrons carry a negative charge

if we add 2 more electrons, the charge of the ion becomes negative

thank you.

Answer:

R we gonna say what letter if were gonna say it its A

Explanation:

SBc Its Our Lesson Today In Science

Answer:

R is universal gas constant

It is has fixed value which would depend upon the units in which P,V and T expressed in the equation PV=nRT

R=

nT

PV

Answer:

value of R=0.0821atm,mol-¹k-¹

Answer:

B

Explanation:

Because I said so