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
Lerok [7]
3 years ago
9

statement 1,mass is conserved durning the reaction. statement 2 sum of mass and energy is conserved durning the reaction. which

statement is true for both nuclear reaction and chemical reaction
Chemistry
1 answer:
maksim [4K]3 years ago
6 0

Answer:

Explanation:

None of the statement is true for both chemical and nuclear reactions. In chemical reactions, mass is always conserved and the type of atoms are also conserved.

You might be interested in
The following words can be used interchangeably for particles EXCEPT
natka813 [3]

Words that can be used interchangeably for particles are mite, iota, grain, speck, etc.

<h3>What are particles?</h3>

Particles are tiny amount of substances which all together make up the whole substance.

Matter is made up of particles according to the particulate nature of matter.

The particles that make up matter include:

  • atoms
  • molecules
  • ions
  • electrons
  • protons
  • neutrons

Words that can be used interchangeably for particles are mite, whit, iota, grain, tittle, speck, etc.

Learn more about particles at: brainly.com/question/459743?source=archive

5 0
3 years ago
How to know if a guy is really into you?
sasho [114]
Some signs are they talk to you a lot and notice more details.
4 0
3 years ago
Considering that the mantle is 44.8% oxygen and 21.5% silicon by mass, calculate the mole ratio of oxygen atoms to silicon atoms
horrorfan [7]

The mantle has a mass of around 4.278 X 10 ^2^4 kg that is around 68.4% of earth's mass.

So to calculate moles we need to first find out the mass of oxygen and silicon present in mantle. It is given that oxygen is 44.8% by mass in mantle and 21.5% by mass in mantle, therefore to calculate its mass, we need to use \text{mass percentage }=\frac{\text{mole of solute}}{\text{mass of solution}}\times100

Now, to calculate mass percentage of oxygen

44.8 =\frac{x}{4.278X10^2^4kg}\times100

x= 191.65\times10^2^2kg

Similarly the mass of silicon can be calculated

21.5 =\frac{x}{4.278X10^2^4kg}\times100

x=91.977\times10^2^2kg

Now, the moles of any substance is calculated by

\text{moles}= \frac{\text{given mass}}{\text{molar mass}}

\text{moles of oxygen}= \frac{191.65\times10^2^2kg}{2.6566962\times10^-^2^6kg}

where, mass of oxygen in kilograms is 2.6566962\times10^-^2^6kg

So,\text{moles of oxygen}=72.1384\times10^4^8\text{moles of O}

Similarly \text{moles of silicon}= \frac{91.977\times10^2^2kg}{4.663\times10^-^2^6kg}

\text{moles of silicon}=19.724\times10^4^8\text{moles of Si}

Now, to calculate mole ratio we need to divide every moles to the lowest calculated mole that is the moles of Si and round it off to the nearest whole number.

\text{mole ratio of oxygen}= \frac{72.138\times10^4^8kg}{19.724\times10^4^8kg}

=3.65\approx 4

\text{mole ratio of Silicon}=\frac{19.724\times10^4^8}{19.724\times10^4^8}

=1

\text{Mole ratio of Oxygen : Mole ratio of Silicon} = 4:1


6 0
4 years ago
Read 2 more answers
Draw the best lewis structure for bro4- and determine the formal charge on bromine
Svetach [21]

Answer :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule. The electrons are represented by dot.

The given molecule is, perbromate ion.

Bromine has '7' valence electrons and oxygen has '6' valence electron.

Therefore, the total number of valence electrons in perbromate ion, BrO_4^- = 7 + 4(6) + 1 = 32

According to Lewis-dot structure, there are 14 number of bonding electrons and 18 number of non-bonding electrons.

Formula for formal charge :

\text{Formal charge}=\text{Valence electrons}-\text{Non-bonding electrons}-\frac{\text{Bonding electrons}}{2}

\text{Formal charge on }Br=7-0-\frac{14}{2}=0

The Lewis-dot structure of perbromate ion is shown below.

7 0
4 years ago
Read 2 more answers
Energy does not change form. True or False
Marrrta [24]

Answer:

Energy can change form, so False

3 0
3 years ago
Read 2 more answers
Other questions:
  • Why does table salt dissolve more rapidly than rock salt
    11·2 answers
  • Determine the poh of 0.01 molar solution of carbonic acid
    15·1 answer
  • 6. From the values of ΔH and ΔS, predict which of the following reactions would be spontaneous at 25ºC: Reaction A: ΔH = 10.5 kJ
    6·1 answer
  • Balance the equation 2kclo3 3o2 + kcl
    11·1 answer
  • Which of the following gases was most likely present in Earth’s earliest atmosphere?
    13·1 answer
  • The reaction, 4Fe (s) + 3O2 (g) à 2 Fe2O3 (s), is the rusting of iron. What occurs as the reaction proceeds? a precipitate is fo
    12·2 answers
  • A 50.0 mL sample of a 0.200 M aqueous solution of Na3PO4 was added to 50.0 mL of a 0.100 M aqueous solution of BaCl2. The mixtur
    5·1 answer
  • In your OWN WORDS, describe what the “Law of Conservation of Energy” is.
    7·1 answer
  • Purchasing the correctly sized BMX bike is based on the height of the rider. In order to fit a customer, the salesman can use th
    14·1 answer
  • you are sitting in a go cart that is not moving. John then pushed the cart and it moved. What caused the go cart to be still ? w
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!