1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
emmainna [20.7K]
3 years ago
8

In the Table of Atomic Particles, various symbols have two numbers. The top number represents the atomic mass of the particle, w

hat do the bottom numbers represent?
Select all that apply.
atomic weight
charge
atomic number
number of neutrons
number of positrons
number of electrons
number of mesons
number of protons
Chemistry
2 answers:
MArishka [77]3 years ago
5 0
Atomic number and number of electrons.
sergiy2304 [10]3 years ago
5 0

Answer:

The bottom numbers represent the charge, the number of protons, and the atomic number. :)

You might be interested in
If 2.00 g of mg reacts completely with 50.0 ml of hcl solution, what is the molarity of the hcl solution? mg(s) + 2hcl(aq) → mgc
Amanda [17]
The molarity of HCl is calculated as below

find the moles  of   mg used
moles = mass /molar mass

= 2.00g/24 g/mol=0.083 moles
 write the  reacting equation
Mg(s) +2HCl (aq)= MgCl2(aq) + H2(g)

by use of mole ratio between Mg to HCl  which is 1  :2 the moles of HCl is therefore
= 0.083 x2 =0.166 moles

molarity of HCl = moles of HCl/ volume in dm^3

that is 0.166/50 x1000= 3.3 M of HCl
6 0
3 years ago
Read 2 more answers
Of the following lists of electron transport compounds, which one lists them in order from the one containing electrons with the
lutik1710 [3]

Answer:

FADH2 -- FMN of Complex I -- Fe-S of Complex II -- Q -- Fe-S of Complex III -- Cyt c -- Cyt a of Complex IV -- O2

Explanation:

7 0
3 years ago
The volume of a gas at 27.0c and 0.200atm is 80.0 ml .what volume will the same gas sample occupy at STP?
FrozenT [24]

Answer:

V₂ = 14.56 mL.

Explanation:

  • We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

  • If n is constant, and have different values of P, V and T:

<em>(P₁*V₁) / T₁ = (P₂ * V₂) / T₂</em>

<em />

  • Knowing that:  

V₁  =  80.0 mL, P₁ = 0.20 atm, T₁ = 27  °C + 273 = 300 K.

V₂  =  ??? mL, P₂ (STP) = 1.0 atm, T₂ (STP) = 0 °C + 273  =  273 K.

Applying in the above equation

(P ₁* V₁) / T₁ = (P₂ * V₂) / T₂

(0.20 atm * 80.0 mL) / 300 K= (1.0 atm  * V₂) / 273 K

V₂ = (0.20 atm * 80.0 mL * 273 K) / (300 K * 1.0 atm)

V₂ = 14.56 mL

<em>So, the answer is: V₂ = 14.56 mL.</em>

7 0
2 years ago
How many grams of CaOH2 are in this solution? The molar mass of CaOH2 is 58.093 g/mol. (0.0787 mol CaOH2) (58.093 g/mol) = g CaO
Alenkinab [10]

Answer:

mass is 4.57 g

Explanation:

Ca(OH)₂ solution consists of Ca(OH)₂ solute molecules and solvent and we are asked to find the mass of Ca(OH)₂ in the solution

number of moles of Ca(OH)₂ is - 0.0787 mol

molar mass of Ca(OH)₂ is - 58.093 g/mol

we can use the following equation

number of moles = mass of Ca(OH)₂ / molar mass of Ca(OH)₂

rearranging the equation

mass of Ca(OH)₂ = number of moles x molar mass

 mass = 0.0787 mol x 58.093 g/mol = 4.57 g

mass of Ca(OH)₂ is 4.57 g

4 0
3 years ago
According to most scientists, cold fusion
Advocard [28]

Answer

A IS THE ANSWER

Explanation:

A: will not be a practical source of energy on Earth.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Assume that each atom is a sphere, and that the surface of each atom is in contact with its nearest neighbor. Determine the perc
    5·1 answer
  • 4HCI + O2 =2H20 + Cl2
    9·1 answer
  • How is the use of word theory in science different from its more common use
    5·1 answer
  • 1. Using the balanced equation, answer the following questions:
    15·1 answer
  • A rigid container (volume cannot change) is filled with carbon dioxide gas at room temperature. The container is then placed in
    12·1 answer
  • What is the identity of the element that has 19 protons and 22 neutrons?
    13·1 answer
  • Acceleration cannot be _________
    7·1 answer
  • How is the preodictable arranged by atomic mass, coloms , and rows
    9·2 answers
  • 1.00 mL of 12.0 M HCl is added to 1.00 L of a buffer that contains 0.110 M HNO2 and 0.170 M NaNO2. How many moles of HNO2 and Na
    10·1 answer
  • Which pair of elements would form an ionic bond? <br> n and o k and be c and cl fe and ni
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!