which one is? Will give brainliest

Which One Is? Will Give Brainliest

Answers

Answer 1

Answer: 2Cr + 3Br2 Yields 3CrBr3

Explanation:

We know that 4a is not balanced because there are 3 Nitrogen atoms on the reactants side and 2 on the products side.

We know that 4c is not balanced because there are 4 Chlorine atoms on the reactants side and 2 on the products side. (Remember there are 2 Cl2 atoms. Therefore, 2 times 2 means there are 4 Chlorine atoms on the reactants side)

Finally, we know the answer is not 4d because there is 1 Potassium on the reactants side and 2 potassiums on the products side.

Therefore, the answer must be 4b, which contains 2 Chromium atoms and 6 bromine atoms on each side


Related Questions

What two gases are cycled through ecosystems?

Answers

[tex]\huge\tt \blue{❥Answer}[/tex]

Photosynthesis converts carbon dioxide gas to organic carbon, while respiration cycles the organic carbon back into carbon dioxide gas.

______________________________

~ ʜᴀᴘᴘʏ ʟᴇᴀʀɴɪɴɢ ~

Scientist are studying photosynthesisIn in a forest ecosystem that has plants animals and decomposers

Answers

Answer:

Ecosystem is food web of primary and secondary producers and consumers.

Explanation:

In an ecosystem, there exist primary producers, primary consumers, secondary consumers, and tertiary consumers such as detritivorous such as viruses and bacteria that act on the living bodies and recycle the nutrients back to plants through the soil. The primary producers such as all green plants and others make their own food being autotrophs they use sunlight and carry out photosynthesis process. On the depend on the herbivorous they eat grass etc. The secondary consumers are carnivores as heterotrophs that feed on herbivores.

How many moles of AgNO3 must react to form 0.854 mol Ag?
mol AgNO3

Answers

Answer:

0.854

Explanation:

The equation of its dissolution in water is: AgNO3 → Ag + (aq)  +  NO3- (aq)

and     AgNO3 →   Ag + (aq)  +  NO3- (aq)

         1 mol          1mol                1mol

            ?  --------   0.854mo

so for finding the value, it is sufficients to complute 1 x 0.854 mol =0.854 mol

so,  0.854 mol is required for the reaction to form 0.854 mol of Ag

2.)Which action forms a different chemical substance?
A. crushing a rock
B. burning a piece of wood
C.mixing salt and pepper
D.melting an ice cube

Answers

Answer:

B. burning a piece of wood

Explanation:

The Chemical Would Be The Air Coming From The Wood While Burning It

Tell Me If Im Correct  

I need help with #4 please

Answers

Answer:

1. Land 2. open 3. broken 4. Lava matter 5. Force of the plates

What Effect on the temperature of a boiling liquid and on it's distillation temperature is produced by a soluble nonvolatible impurity

Answers

Answer:

What effect on the temperature of a boiling liquid and on its distillation temperature is produced by each of the following?(a)A soluble, nonvolatile impurity? It would cause the mixture to boil at higher temperature and increase the distillation temperature.

It would cause the mixture to boil at a higher temperature and increase the distillation temperature.

What is distillation?

Distillation is a process involving the conversion of a liquid into a vapour that is subsequently condensed back to liquid form.

During distillation, substances separate based on their boiling points. The boiling point of the mixture varies as vapour rises in a distillation column, due to changes in temperature and pressure. This process divides distillation into stages.

Hence, It would cause the mixture to boil at a higher temperature and increase the distillation temperature.

Learn more about distillation here:

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HELPP ASAP I’ll mark you as brainlister 100 points :((((

Answers

Answer:

the pool table one

Explanation:

cuz gas just goes EVERYWHERE

What is the charge of an atom containing 9 protons, 11 neutrons, and 12 electrons?

Answers

Answer:

Explanation: atom is changed to ion. There are 3 more electrons than

Protons, so charge is -3. Actually, F atom can gain only one electron.

Then it will have an octet (8 electrons)

pls i have a chemistry test answers asap :'( ​

Answers

Answer:

Zinc is more active than copper.

Explanation:

Now, the reason is that Zinc loses its valence electrons more easily than copper to take part in a reaction.

Convert 17oC to kelvin

Answers

Answer:

290

Explanation:

Temperature in kelvin = 273 + Temperature in ⁰C

Answer: °Celsius Kelvin

                25.00    298.15

                25.01 298.16

                25.02 298.17

                25.03 298.18

                25.04 298.19

                25.05 298.20

                25.06 298.21

                25.07 298.22

                25.08 298.23

                25.09 298.24

What volume will 25.2 g of He occupy at STP?

Answers

Answer:

The volume is 20.3

Explanation:

What is the difference between speed and acceleration?
Please help :)

Answers

Answer:

Speed is how fast you are going at the moment but acceleration is how fast you are building up speed to get to a set point

Explanation:

Need help ASAP DUE IN LIKE 2 minutes!!!!!!! Points are added

Answers

Proton:

Positive

Found in Nucleus

Mass of 1 AMU

Neutron:

Neutral

Found in Nucleus

Mass of 1 AMU

Electron:

Negative

Found in orbitals

Mass of 0 AMU

Please mark Brainliest if this helped you! :)


How does the human body build the complex
molecules it needs?

Answers

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case

Answer:

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.

Explanation:

Pl help it’s for a grade and I can’t find it

Answers

Answer:

personally I think it's a but it could also be D.

But yeah personally I would say A

How are the respiratory, urinary, and integumentary systems involved in the removal of waste. (list)

Answers

Answer:

The lungs in the respiratory system excrete some waste such as carbon dioxide. The bladder helps to remove waste by urination.

Which of the nine substances are made of four elements?

Answers

Answer:

Oxygen mucury carbon dioxide and platinum

Explanation:

I need help with the question below:

[tex]PCl_5 = PCl_3+Cl_2 \\ [/tex]
Where PCl5 and PCl3 are gasses

In the above equation , Predict the effect of change in :
I. Temperature
ii. Pressure
iii. Removal of Chlorine​

Answers

Answer:

1: As the temperature rises, the equilibrium moves towards the products

2: The higher the pressure, the higher the equilibrium goes to the reactants

3: By removing chlorine, the equilibrium moves towards the products

CH4 + 2O + CO2 + 2 H2O
If 9.65 mole of methane reacts with oxygen to produce carbon dioxide and water, what mass of water is produced?

Answers

Answer:

347.4 (19.3 mole)

Explanation:

CH4 + 2O2 = CO2 + 2H2O

1(mole) - 9.65(mole)

2(mole) - x ⇒x = 9.65*2=19.3

m=n*M ⇒ m= 19.3*(1*2+16)= 19.3*18=347.4(g)

What is the percent composition of oxygen in Iron(III) oxide? (Round to three sig figs)

Fe2O3 159.7g/mol
Fe =55.85 x 2 =111.7 g/mol
O = 16.00 x 3 = 48.00 g/mol


____% O

Answers

30.1%

do not ask why it just is.

Can someone plz help me with this one problem plzzzzz I’m being timed!!!

Answers

Answer:

answer : the penguins do

CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2

How many moles of water are needed to produce 56.8g C2H2?

Answers

Amount of moles of water is 4.36 mol

Explanation: M(C2H2) = 2·12.01 + 2·1.008 = 26.036 g/mol

Amount of substance is n= m/M= 56.8 g / 26.036 g/mol= 2.18159 mol

Water is needed 2·2.18 mol = 4.36 mol

Which sentence best illustrates the idea outlined above

Answers

Sorry- there are no sentences listed

There are no sentences above

Position A B C
Pe
Ke
Me

Answers

wait what is the question

How are plate tectonics and the rock cycle connected

Answers

Answer:

All igneous rocks the basis of the rock cycle are formed by plate tectonics. ... The heat from the mantle that fuels plate tectonics causes both igneous and sedimentary rocks to be turned into metamorphic rocks. The metamorphic rocks can be eroded into sedimentary rocks are remelted back into igneous.

Explanation:

PLEASE HELP ME ASAP!!!!!! YOU GET 10 POINTS!!!!!!
For reaction below, describe how its equilibrium could be shifted in the indicated direction.

1. H2(g)+C12(g)<---------->2HC1(g)+thermal energy: shift to the left

2.C(s) +O2(g)<---------->CO2+thermal energy: shift to the right

Answers

Answer:

Here is the ANSWER KEY, it may also has other of the questions you don't know :)

Explanation:

https://sciencewithhorne.weebly.com/uploads/5/7/3/5/57358947/unit_11_hw_key.pdf

1. Mercury is most often obtained by roasting cinnabar (HgS). How many grams of cinnabar
are required to obtain 165 grams of mercury?
HgS + 02—-Hg + SO2

Answers

Answer:

191.4 grams of cinnabar  are required to obtain 165 grams of mercury.

Explanation:

The balanced reaction is:

HgS + O₂ ⇒ Hg + SO₂

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

HgS: 1 mole O₂: 1 mole Hg: 1 mole SO₂: 1 mole

Being the molar mass of each compound:

HgS: 232g/moleO₂: 32 g/moleHg: 200 g/moleSO₂: 64 g/mole

the following mass amounts of each compound participate in the reaction:

HgS: 1 mole* 232 g/mole= 232 gO₂: 1 mole* 32 g/mole= 32 gHg: 1 mole* 200 g/mole= 200 gSO₂: 1 mole* 64 g/mole= 64 g

Then you can apply the following rule of three: if by stoichiometry 200 grams of Hg are formed from 232 grams of HgS , 165 grams of Hg are formed from how many grams of HgS?

[tex]mass of HgS=\frac{165 grams of Hg*232 grams of HgS}{200 grams of Hg }[/tex]

mass of HgS= 191.4 grams

191.4 grams of cinnabar  are required to obtain 165 grams of mercury.

H2SO4 + 2 KOH --> K2SO4 + 2 H2O
Combustion
Synthesis
Decomposition
Single replacement
Double replacement
O Neutralization

Answers

double replacement because H and K are both switching

En una planta de energía, se produce CO2 gracias a la reacción de combustión del material orgánico con oxígeno para producir CO2, SO2, SO3, NO, NO2 y H2O que son los causantes del efecto invernadero, el SO2 reacciona con H2O para formar H2SO3, causante de la lluvia ácida. En condiciones de gas ideal el SO2 se encuentra a una temperatura de 100°C y 0,5 atm de presión, el volumen ocupado generalmente es de 25 L. 5. La ecuación para hallar el número de moles debe ser: a. Gases ideales: relación entre todas las variables que influyen sobre los gases b. Boyle: relación entre volumen y presión c. Charles: relación entre el volumen y la temperatura d. Gay Lussac: relación entre la presión y la temperatura

Answers

Answer:

a. Gases ideales: relación entre todas las variables que influyen sobre los gases

Explanation:

La ecuación del gas ideal da la relación entre las variables; presión, volumen, temperatura y número de moles.

Según la ecuación del gas ideal; PV = nRT

P = presión del gas

V = volumen del gas

n = Número de moles del gas

R = constante de gas

T = temperatura del gas

El número de moles de SO2 se obtiene de;

n = PV / RT

n = 0,5 * 25 / 0,082 * 373

n = 12,5 / 30,586

n = 0,41 moles

4) What mass of hydrogen is formed when 2.00g of magnesium
Mg + H2SO4–>H2SO4

Answers

Answer: 0.16 g H2

Explanation:

Mg+ H2SO4= MgSO4 + H2

Atomic massof Mg is 24

Molecular mass of H2 is 2

So,

24g Mg produce 2 g H2

1g Mg produce (2÷24)= 0.083 g H2

2.00g Mg produce (0.083×2) g H2

   = 0.16 g H2

 0.16g of hydrogen is formed when 2.00g of magnesium.

The mass of hydrogen gas formed when 2.00g of magnesium is equal to 0.165 g.

What is the balanced chemical equation?

The chemical equation of a reaction is said to be a balanced equation when the number of atoms of substances is equal on either side of the equation.

Evergy balanced chemical equation must follow the law of conservation of mass according to which the total mass of the substances present on the reactant side should be equal to the total mass of substances present on the product side.

Given, the balanced chemical equation of the reaction of Mg and sulfuric acid:

[tex]Mg + H_2SO_4 \longrightarrow MgSO_4 +H_2[/tex]

One mole of magnesium produces hydrogen gas = 1mol

Given the mass of magnesium = 2g

The number of moles of Mg = 2/24.3 = 0.082 mol

Then the number of moles of hydrogen gas formed = 0.082 mol

The mass of the hydrogen gas = 0.082 × 2 = 0.165 g

Learn more about the balanced chemical equation, here:

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