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
Julli [10]
3 years ago
12

Which two parts of an atom determine the atom's mass?

Chemistry
1 answer:
DENIUS [597]3 years ago
4 0

the number of protons and the number of neutrons determine an element's mass number. :D

You might be interested in
How many moles are in 8.32 x 1024 molecules of CO2.
Andrews [41]

Answer:

<h2>13.82 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{8.32 \times  {10}^{24} }{6.02 \times  {10}^{23} }  \\  = 13.820598...

We have the final answer as

<h3>13.82 moles</h3>

Hope this helps you

6 0
3 years ago
Classify each of the following reactions as either exothermic or endothermic: 2H,O(l) + heat → 2H₂(g) + O₂(g)​
Murljashka [212]

Answer:

endothermic

Explanation:

It is endothermic since it absorbs heat.  If the reaction RELEASED heat (exothermic) the "+ heat" would be on the right side of the equation.

6 0
1 year ago
When considering metal complexation with EDTA, if you are comparing 2 metals, the metal with a higher ____________ will react wi
DENIUS [597]

If you are comparing 2 metals, the metal with a higher <u>Number of free ions</u> will react with EDTA first

<h3>What is EDTA ?</h3>

EDTA is a type of chemical which binds certain metal ions such as calcium and magnesium. some of the functions of EDTA  includes:

  • Preventing blood clotting of blood samples
  • prevention of the formation of Biofilm by bacterias

The EDTA will readily react with metals which have a hiogher number of free ions that it can bind with.

Hence we can conclude that If you are comparing 2 metals, the metal with a higher <u>Number of free ions</u> will react with EDTA first.

Learn more about EDTA : brainly.com/question/10818175

7 0
1 year ago
The following initial rate data are for the reaction of hypochlorite ion with iodide ion in 1M aqueous hydroxide solution: OCI+r
Vinil7 [7]

Answer:

Rate = k [OCl] [I]

Explanation:

OCI+r → or +CI

Experiment [OCI] M I(-M) Rate (M/s)2

1 3.48 x 10-3 5.05 x 10-3 1.34 x 10-3

2 3.48 x 10-3 1.01 x 10-2 2.68 x 10-3

3 6.97 x 10-3 5.05 x 10-3 2.68 x 10-3

4 6.97 x 10-3 1.01 x 10-2 5.36 x 10-3

The table above able shows how the rate of the reaction is affected by changes in concentrations of the reactants.

In experiments 1 and 3, the conc of iodine is constant, however the rate is doubled and so is the conc of OCl. This means that the reaction is in first order with OCl.

In experiments 3 and 4, the conc of OCl is constant, however the rate is doubled and so is the conc of lodine. This means that the reaction is in first order with I.

The rate law is given as;

Rate = k [OCl] [I]

5 0
2 years ago
Balance the equation ____Mg+_____HNO3=____Mg(NO3)2+H2
Arturiano [62]

Explanation:

2Mg⁺ 2HNO₃ = Mg(NO₃)₂ + H₂

7 0
2 years ago
Other questions:
  • The temperature at which a substance in the liquid phase transforms to the gaseous phase refers to the substance's _______. A. s
    10·2 answers
  • Which of the following is the correctly balanced chemical equation for the reaction Ca(OH)2 and HNO3
    10·2 answers
  • What is adaptive radiation?
    5·2 answers
  • It takes 770 joules of energy to raise the temperature of 50.0 g of Mercury by 110°C. What is the specific heat capacity of merc
    8·1 answer
  • In examining several amino acids, you want to identify the feature or features that differentiate one amino acid from another. W
    13·2 answers
  • Dtermine the volume in liters occupied by 0.030 miles of a gas at stp
    13·1 answer
  • Which term describes this molecular shape?
    12·2 answers
  • The combustion of hydrogen gas in oxygen, is it an endothermic or exothermic process? Write a chemical reaction for this process
    15·1 answer
  • CO + 2H2<br> CH3OH<br> How many molecules of CO are needed to form 600g of CH3OH?
    9·1 answer
  • What percent composition of phosphorus in Zn3(PO4)2? This means to find the percent composition of each
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!