Which of the following is an indicator of a chemical reaction? CA. Changing states of matter (solid to liquid) CB. Two different compounds mixing and remaining separate CC. Increasing in temperature D. Decreasing in size

Answers

Answer 1

Answer:

All except 2nd one

Explanation:

States of matter changes in chemical reactionIn Exothermic reactions temperature increasesIn first order reactions or radioactive reactions size decreases because of decay
Answer 2

Answer:

CB. Two different compounds mixing and remaining separate is not correct!


Related Questions

for 50 points!! im having a bit of trouble haha

Answers

Answer:

answer 16.

1.) bohr model used to predict bonding abilities2.) electrical charge attraction holds atom together3.) valence electrons are outermost electrons4.) electron cloud - where electrons are found

answer 17.

false

because atomic number are numbers of protons

how can u launch make the model spacecraft move without touching it

Answers

Answer:

How can the launcher make the model spacecraft move without even touching it? ...

Magnetic forces can attract or repel objects at a distance. ...

They explore attracting and repelling forces with magnets and with the simulation. ...

Magnetic forces can convert potential energy stored in the magnetic field to kinetic energy.

Explanation:

The launcher can launch the model spacecraft by exerting a magnetic force.

Magnetic force is a force just like gravity that can act across a distance without touching the object that is attracted by it. It should be noted that magnetic attraction is a pulling force.

Therefore, since the launcher wants to make the model spacecraft move without touching it, a magnetic force should be exerted on it. The magnetic force can act as the distance that's required for the objects to move.

Read related link on:

https://brainly.com/question/17378094

where did all the elements in the universe come from?

Answers

Answer:

Wal-mart XDDDDD

Explanation:

What does the illustration indicate?

Answers

Answer: A

Explanation:

How many calories of heat are required to raise the temperature of 225g of water from 10.5°C to 43.7°C

Answers

This the answer to the question you asked:)

You start with 100mL of 14M HNO3 and 10grams of copper metal. How many moles of the nitrogen dioxide gas will be produced?

Answers

Answer:

0.316 moles are produced.

Explanation:

We state the redox reaction:

4HNO₃   + Cu   →  Cu(NO₃)₂ + 2NO₂ + 2H₂O

We need to determine the limting reactant:

0.1 L . 14 M = 1.4 moles

10 g . 1mol/ 63.54g =0.158 mol

Cu is the limiting reactant. Let's see

4 moles of acid need 1 mol of Cu to react

1.4 moles of acid may react to (4 . 1) / 1.4 = 0.35 moles

We do not have enough Cu.

1 mol of Cu can produce 1 mol of NO₂

Then 0.158 moles will produce, 0.316 moles. (double of moles)

If we see stoichiometry, ratio is 1:2

Look at the image below:
Pain Reyne
Ben Francia
Les Trans
01 Juan Bautista
Pents
SAN
PEAS FAULT
NORTH AMERICAN PLATE
CIRC PLATE
Carina
What type of plate boundary is shown here?
O convergent
divergent
transform

Answers

Answer:

Transform

see image below:

what's the formula for hypoarsenous acid?

Answers

Answer:

As(OH)3 or AsH3O3

Explanation:

H3AsO3 is the chemical formula

What type of energy does photosynthesis turn energy from the sun into?

Answers

Explanation:

it turn into chemical energy

The answer would be ~chemical energy~ because plants convert solar energy into chemical energy

Hope this helps

Have a great day/night

Feel free to ask any questions

HELP!!!!!!!!
One use of CaCl 2 to salt roads in the winter. The equation that describes the change in freezing point of a solvent due to a solute is T f =i x K f x molality. How much would the freezing point decrease if a 3.23 molal (m) solution were achieved? (K f =1.86^ C/(mol/kg) for water and i = 3 for CaCl 2 )

Answers

Answer:

On contact with ice, calcium chloride forms brine rapidly, which lowers the freezing point of water and melts snow and ice quickly. Calcium chloride forms brine faster than other ice melters because its hygroscopic properties actually cause it to attract moisture from its surroundings

Explanation:

HOPE IT WILL HELP YOU

I need help I'll mark you as Brainliest ​

Answers

Answer: c

Explanation:

Neon is a noble gas because it is stable non reactive and has ____ valence electrons

Answers

Answer:

8 .....................

What type of weathering creates a granite Tor?

Physical or
Chemical or
Biological​

Answers

Answer:

Physical

Explanation:

Physical weathering is defined as the geological process in which rocks are broken down but there is no change in their chemical composition.

Granite tor are the rock masses above the ground surface which are  associated with granites

Granite Tor is an example of physical weathering as they formed by freeze–thaw weathering. Granite tor are formed when magma present in the crust cools down and form batholith. Rocks above batholith gets erodes and left the batholith to expose.

Hence, the correct answer is "Physical weathering'.

Bill is experimenting with two simple machines. How will he know which
machine is more efficient?
O It will use less force to do the same amount of work.
O It will use more force to do the same amount of work.
O It will be lighter and stronger than the other simple machine.
It will not be possible to tell which simple machine is more efficient.

Answers

The first one I believe
I think the best answer is A

Fill in the blank...
Each element is made up of only one kind of ________

Answers

Each element is made up of only one kind of atom.

Question 8

Using Henry's Law: Sz/P1-S2/P2
To increase the solubility of a gas at constant temperature and 202kPa pressure from
0.85g/L to 5.1g/L, the pressure would have to be increased to:
A.505kPa
B.17.2kPa
C.606kPa
D.1212kPa

Answers

Answer:

D

Explanation:

plug the numbers

1) Write the symbol and charge for each individual ion
2) Balance the charge so that they equal to zero
3)Write the formula based on how many of each ion you used in step 2

6) Nitrogen and Barium
7) strontium and fluorine
8) iodine and calcium
9) magnesium and sulfur
10) Sulfur and aluminum

Answers

N -3

Ba +2

Sr +2

F -1

I -1

Ca +2

Mg +2

S -2

S -2

Al +3

//

Ba3N2

SrF2

CaI2

MgS

Al2S3

//

I don't really understand 2.

¿Qué es la ciencia? ¿Qué importancia tiene la ciencia para el desarrollo de la humanidad y de la vida? AYUDA PORFAAAAAAAA

Answers

Explanation:

La ciencia puede entenderse como una forma que el ser humano encontró para adquirir conocimientos a través de métodos científicos, tecnológicos y basados ​​en estudios, pruebas e investigaciones y no basados ​​en el pensamiento para explicar los fenómenos humanos, de la naturaleza y de la vida.

La ciencia tiene un rol impactante y transformador en la sociedad, todo el conocimiento adquirido por el hombre a través de la ciencia ha transformado para mejor la vida de las personas, generando mayor calidad de vida, salud, educación, sentido crítico, etc.

En el escenario pandémico que vive el mundo actualmente, la ciencia es fundamental, a través de sus estudios e investigaciones que han ayudado en el desarrollo de vacunas efectivas para inmunizar a los humanos contra el virus y salvar vidas.

How is wind energy more environmental friendly than heat energy?

Answers

Answer:

Wind is an emissions-free source of energy

Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling.

Explanation:

Anyone know how to do this?

Answers

Answer:I can’t see the question

Explanation:

What is the most basic level of biological organization?



Question 1 options:

Organism


Cell


Molecule


Atom

Answers

Answer:

molecule

Explanation:

Answer:

c

Explanation:

The process by which organisms makes more
organisms like themselves is called

Answers

Answer:

Reproduction

Explanation:

Reproduction is the biological process by which new “offspring” (like organisms) are produced from their “parents" (the original organism)

How is humility related to air pressure

Answers

Humid air has higher pressure because of the heaviness of water humid air is lighter so it has lower pressure.

Answer:  Edmentum question:

The following graph shows the barometric pressure over the course of the day in Bellingham. What effect will this trend likely have on cloud cover and precipitation over the city?

a scatter plot showing the barometric pressure of an area, with air pressure on the y-axis and time on the x-axis

Explanation: edmentum answer:  

In the graph, barometric pressure is decreasing. The drop in pressure represents a low-pressure system. This type of system will cause an increase in cloud cover and precipitation.

3- Given 90.0 g C6H1206
a- How many moles of Glucose are present in 90.0 g of glucose?

Answers

molar mass = 180.18

//

[tex]90.0 \: g \times \frac{1 \: mol}{180.18 \: g} = 0.4995004995 \: mol[/tex]

[tex] = 0.500 \: mol[/tex]

Which of the following ideas is NOT accepted as true according to today’s atomic theory?

a. Atoms are the basic unit of matter
b. Electrons move in circular
paths around the nucleus
c. Protons, electrons, and neutrons are smaller than the atom
d.The nucleus has charged and uncharged particles

Answers

Answer:

D

Explanation:

Mars have more gravity than earth?

True or false?

Answers

Answer:

false

Explanation:

earth is larger than mars so it has more gravity

Answer: false

Explanation:

Question pic
(Will make brainliest)

Answers

Answer:

c

Explanation:

Answer:

a and c

Explanation:

lithium electron configuration​

Answers

Answer:

Dalam fisika atom dan kimia kuantum, konfigurasi elektron adalah susunan elektron-elektron pada sebuah atom, molekul, atau struktur fisik lainnya. Secara formal, keadaan kuantum elektron tertentu ditentukan oleh fungsi gelombangnya, yaitu sebuah fungsi ruang dan waktu yang bernilai kompleks.

#semogamembantu

which of the substance changes when it is heated
A . mass
B . volume
C . weight
D . brass


Answers

Answer:

mass

Explanation:

Answer:

The answer is C.

Explanation:

If you have absolutely identical objects that have the same weight exactly when they are at the same temperature, then when one object is heated, it will weigh more.

Hope this helps :)

-ilovejiminssi♡

The melting of metamorphic or igneous rock forms what substance? How? Why?

Answers

Answer: Metamorphic rocks form by recrystallization of either igneous or sedimentary rocks,

Explanation:

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