can someone please explain this i will give brainliest

Can Someone Please Explain This I Will Give Brainliest

Answers

Answer 1
1) 2
2) 2
3) there are 2 atoms of hydrogen and 1 atom of oxygen, altogether is 3
4) subscript tells how many atoms of each element are present in the molecule
5) No, it is not balanced because the oxygen atom is not equal on both sides of the reactants and products. This wouldn’t be considered balanced as there are two oxygen atoms in the reactants section and only one oxygen on the products section.

It is:
2 H2 + O2 -> 2 H2O

Related Questions

what is biopolymer ?​

Answers

Answer:

Biopolymers are natural polymers produced by the cells of living organisms. Biopolymers consist of monomeric units that are covalently bonded to form larger molecules. There are three main classes of biopolymers, classified according to the monomers used and the structure of the biopolymer formed: polynucleotides, polypeptides, and polysaccharides.

Explanation:

Definition: Biopolymers are organic molecules that are composed of repeating monomers and produced by living organisms.

I NEED HELP ASAP, If you help me I’ll give you Brainlist [Calorimetry and specific heat lab]
I don’t know how to calculate the error %
The formula is:
%Error = [I Accepted value-Experimental value I / Experimental value] x 100 can someone please PLEASE help me :(

Answers

Answer:

Explanation:

I gave this formula as

What you should get - what you got

---------------------------------------------------   * 100

What you should get

Suppose you are talking about the specific heat of copper and you did a lab and did it fairly well and the specific heat came out to be 0.33

That's what you got, 0.33

What you should get is 0.35 according to the table you've given us.

% error = 0.35 - 0.33

                -------------- * 100

                      0.35

% error = 0.02 * 100/ 0.35

% error = 2/0.35

% error = 5.71

Now here is the really hard part. You have to decide what a positive error is and what a negative error.

A positive error using this formula means you are too low.

A Negative error means that you are too high, just the opposite of what you might think.

Can you show us the experimental value?

So basically, the accepted value would be under the Specific heat capacity of metal (e.g. 0.90, 0.35, 0.44, 0.12).

Your experimental value would be the specific heat capacity that you got from the lab.

You would first substract the experimental value from the accepted value

[tex]accepted \: value - experimental \: value [/tex]

and then you would divide the result by the experimental value

[tex]result \div experimental \: value[/tex]

and then, you would multiply the result of that by a hundred to get your percentage

[tex]result \times 100 = \% \: error[/tex]

//

The image shown is an example.

0.90 is our accepted value.

0.88 is our experimental value.

The overall percentage error I got is %2.27

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

What is the volume of a gas at 20°c
If its orginal volume at 60°C
is 300 cm?​

Answers

Explanation:

Using Charles law;

V1/T1 = V2/T2

Convert your temperatures to kelvin;

20+273=298k

60+273=333k

Then put the values the formula stated above

300/333 = V2/298

Make V2 the subject of the formula

V2= (300×298)/333

V2= 89400/333

V2= 268.47cm

c) A football feels hard on a hot day but feels softer in the evening​

Answers

Answer: ^_^

Explanation:

its because during day time the ball becomes heated up and the air inside it try to come out as the heat air always try to go up swelling up the ball,

so in the evening when the air cools down the ball too cools down and air inside it also cools down making the ball feel soft,

Therefore, a football feels hard on a hot day but feels softer in the evening​

Hope it helped u,

pls mark as the brainliest

^_^

Answer:

its because during day time the ball becomes heated up and the air inside it try to come out as the heat air always try to go up swelling up the ball,

so in the evening when the air cools down the ball too cools down and air inside it also cools down making the ball feel soft,

Therefore, a football feels hard on a hot day but feels softer in the evening​

Hope it helped u,

pls mark as the brainliest

Explanation:

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

What does the illustration indicate?

Answers

Answer: A

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)

MARKING BRAINLIEST

options: Tempature
solid
melting point
time
condensation point
gas
freezing point
liquid
boiling point

Answers

Answer:

I LIKE TRAINS

Explanation:

SNAILS ARE YUMMY

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:

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:

When calcium chloride and baking side is mixed, is it an example of chemical or physical change?

Answers

it’s a chemical change

Why are red blood cells red

Answers

Red blood cells are red because they contain Haemoglobin

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:

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:)

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:

A permanent alteration in the DNA sequence that makes up a gene is called am
Mutation
Germline
Meiosis
Evolution

Answers

Answer:

Gene mutation

Explanation:

A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block base pair to a large segment of a chromosome that includes multiple genes

Would definitely be a mutation

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]

What is the most basic level of biological organization?



Question 1 options:

Organism


Cell


Molecule


Atom

Answers

Answer:

molecule

Explanation:

Answer:

c

Explanation:

How many electrons are transferred when Be and O bond?
02
0
3
4.

Look at picture
ASAP please will mark as brainlist don’t got much time

Answers

Answer:

2 electron are transferred when Be and O bond formed

Answer:

2 is the answer:)))))))))

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'.

HELP ASAP PLS AHHH ty

Answers

Answer: a for the first one , d for the second  one, b for the third one.

Explanation:

Answer:

A: Main sequence star.

B: White Dwarf.

C: Black hole.

Explanation:

Brainliest please.

Question pic
(Will make brainliest)

Answers

Answer:

c

Explanation:

Answer:

a and c

Explanation:

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 F1-ion is classified as a(n).
and has:
A.anion, 1 valence electron
B.anion, 8 valence electrons
C.cation, 2 valence electrons
D.cation, O valence electrons

Answers

Answer:

B

Explanation:

The [tex]\rm \bold{F^1^-}[/tex] is the fluorine anion with 8 valence electrons. Hence, option B is correct.

An ion is defined as the atom with the change in the valence electrons by the loss or gain of electrons to complete the outer shell.

What type of ion is [tex]\rm F^1^-[/tex]?

The ions with the gain of electrons result in a negative charge and are termed anions. The ions with a loss of electrons have a positive charge and are termed cations.

The F is the halogen atom of group 17 with 7 valence electrons. The ion formed for F requires 1 electron to complete its valence shell.

The ion [tex]\rm F^1^-[/tex] has a negative charge, which denotes it gains an electron and forms anion.

The gain of electrons results in the number of valence electrons being 8.

Thus, [tex]\rm F^1^-[/tex] is the fluorine anion with 8 valence electrons. Hence, option B is correct.

Learn more about ions, here:

https://brainly.com/question/1782326

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

Please help fast, I will give brainliest.

Answers

Answer:

B

Explanation:

B is the answer if I’m not wrong

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.

¿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.

What does the reaction rate measure?

Answers

Answer:

It's C

Explanation:

cuz im goated

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