can someone help me with this will mark brainliest

Can Someone Help Me With This Will Mark Brainliest

Answers

Answer 1

Answer:

3

Explanation:


Related Questions

how many moles of nitrogen gas are produced in the reaction if we started with 6 moles of ammonium nitrate

Answers

9moIN2 :
The molar ratio between Nitrogen and ammonia is
1
:
3
, therefore, to produce 18 moles of ammonia, we will need

Which of the following explains why a longer bond is also a weaker bond? Help plz

Answers

Answer:

Longer bonds have lower attractive force

pond water with microscopic organisms inside mixture or pure substance

Answers

Answer:

it's mixture

Explanation:

since pond is composed of not only microbes and also more aqatic animals so I think pond become mixture but not pure substance am I right or not...

Sam and Jane have been investigating the amount of copper sulphate that can be dissolved in water at different temperatures .They added copper sulphate till it could not be dissolved any further and also measured the mass of copper. The results are below. What conclusions can you make from results?

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Answer:

This question is so confusing, I'm sorry

Limiting Reactant
12.0 grams of sodium reacts with 5.00 grams of chlorine. What mass of sodium
chloride could be produced?
Nas) +
Cl2(g) →
NaCls)
(1)
(2)
Identify the limiting reactant.
Determine the amount of sodium chloride produced.

Answers

Answer:

(1) Cl₂ is the limiting reactant.

(2) 8.18 g

Explanation:

2Na(s) + Cl₂(g) → 2NaCl(s)

First we convert the given masses of reactants into moles, using their respective molar masses:

Na ⇒ 12.0 g ÷ 23 g/mol = 0.522 mol NaCl₂ ⇒ 5.00 g ÷ 70.9 g/mol = 0.070 mol Cl₂

0.070 moles of Cl₂ would react completely with (2 * 0.070) 0.14 moles of Na. There are more Na moles than that, so Na is the reactant in excess while Cl₂ is the limiting reactant.

Then we calculate how many moles of NaCl are formed, using the limiting reactant:

0.070 mol Cl₂ * [tex]\frac{2molNaCl}{1molCl_2}[/tex] = 0.14 mol NaCl

Finally we convert NaCl moles into grams:

0.14 mol NaCl * 58.44 g/mol = 8.18 g

What is the correct shape and polarity of a water molecule

Answers

Answer:

D

Explanation:

because both H's should be positive and O is supposed to be negative.

Lets be honest here no one would help me with these 3-4 questions but anyways

Answers

Answer:

Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.

Explanation:

nun

Answer:

Continental drift or tectonic plates is a theory that explains the formation of the current surface structure of the Earth.

Continental drift is also understandable if you take pictures of each continents map and try to join them with another, for example, try to fit the map of western south India with Oman's southern region you will see they exactly fit each other, Science explains this as that the land had split and drifted to form what we see now, and this is known as continental drift or tectonic plates. This form was brought up by Alfred Wegener in 1912.

This theory is also the reasoning for the rising of mountains like the Himalayan mountains, which are having a rise in their height over time, the Himalayan mountains are believed to be belonging to a boundary of two plates that move towards each other and this is believed as the rise of India.

The human body can get energy by metabolizing proteins, carbohydrates or fatty acids, depending on the circumstances. Roughly speaking, the energy it gets comes mostly from allowing all the carbon atoms in the food molecules to become oxidized to carbon dioxide CO2 by reaction with oxygen from the atmosphere. Hence the energy content of food is roughly proportional to the carbon content.
Let's consider alanine, C3H7NO2, one of the amino acids from which proteins are made, and glucose C6H12O6, one of the simplest carbohydrates. Using the idea above about energy content, calculate the ratio of the energy the body gets metabolizing each gram of alanine to the energy the body gets metabolizing each gram of glucose.

Answers

Answer:

the ratio of the energy the body gets metabolizing each gram of alanine to the energy the body gets metabolizing each gram of glucose is 1.0111

Explanation:

Given the data in the question;

To determine the ratio of the energy the body gets metabolizing each gram of alanine to the energy the body gets metabolizing each gram of glucose, first we get the molar masses of both alanine and glucose

we know that;

Molar mass of alanine ( C₃H₇NO₂ ) = 89.09 g/mol

Molar mass of glucose ( C₆H₁₂O₆ ) = 180.16 g/mol

now, { metabolizing each gram }

moles of alanine = mass taken / molar mass

= 1g / 89.09 g/mol = 1/89.09 moles

moles of glucose = mass taken / molar mass

= 1g / 180.16 g/mol = 1/180.16 moles

In each molecule of alanine, we have 3 atoms  of carbon.

Also, in each molecules of glucose, we have 6 atoms of carbon

so,

number of moles of Carbons in alanine = 3 × 1/89.09 moles = 0.03367

number of moles of Carbons in glucose = 6 × 1/180.16 moles = 0.0333

so ratio of energy will be the ratio of carbon atoms, which is;

⇒ 0.03367 / 0.0333 = 1.0111

Therefore, the ratio of the energy the body gets metabolizing each gram of alanine to the energy the body gets metabolizing each gram of glucose is 1.0111

Which level is made up of organisms that break down dead organisms?

Answers

Answer:

Explanation:

decomposers

How many formula units make up 10.2 g of magnesium chloride (MgCl2)?

Answers

Answer:

6.46×10²² formula units

Explanation:

From the question given above, the following data were obtained:

Mass of MgCl₂ = 10.2 g

Number of formula units =?

From Avogadro's hypothesis,

1 mole of MgCl₂ = 6.02×10²³ formula units

But,

1 mole of MgCl₂ = 24 + (35.5×2) = 24 + 71 = 95 g

Thus, we can say:

95 g of MgCl₂ = 6.02×10²³ formula units

Finally, we shall determine the formula units in 10.2 g MgCl₂. This can be obtained as follow:

95 g of MgCl₂ = 6.02×10²³ formula units

Therefore,

10.2 g of MgCl₂ = (10.2 × 6.02×10²³) / 95

10.2 g of MgCl₂ = 6.46×10²² formula units

Thus, 10.2 g of MgCl₂ contains 6.46×10²² formula units

hi, if your looking for extra points (50+) and brainiest here is ur chance, answer this question correctly plz

Answers

Answer:

Answer choice 'C'

Explanation:

As the ball slows after kicking generates maximum Kinetic Energy, the ball slows due to its Kinetic Energy being transferred to surroundings because of atmospheric and surface friction until it stops in a state of static equilibrium.

either c or a
sorry if im wrong, but im sure its either one.

How many moles of KBr are present in 1000 ml of a 0.02 M KBr solution?

1. .00002
2. 20
3. 50000
4. .02
5. 50​

Answers

Answer:

4. .02

Explanation:

Hello there!

In this case, since the molarity of a solution is defined as the moles of the solute divided by the volume of the solution, we can see we are given the molarity and volume and are asked to compute moles; thus, we can solve as shown below:

[tex]M=\frac{n}{V}\\\\n=M*V[/tex]

Whereas the volume must be in liters (1 L in this case); in such a way we can plug in the volume and molarity to obtain:

[tex]n=0.02mol/L*1L\\\\n=0.02mol[/tex]

Therefore, the answer is 4. .02 .

Best regards!

1.00 x 10^6 atoms of gold is equivalent to how many grams?

Answers

Answer:

3.27 x 10⁻¹⁶ grams

Explanation:

moles Au = 1.00 x 10⁻⁶ Atoms / 6.02 x 10²³Atoms / mole = 1.66 x 10⁻¹⁸ mole Au

grams Au = 1.66 x 10⁻¹⁸ mole Au x 196.97 grams Au/mole Au

= 3.27 x 10⁻¹⁶ grams Au

What is the gravitational force on a 35.0kg object standing on the earth's surface ?

Answers

Answer:

Explanation:

F=mg

F=35*9.81

F=343.35N

What is thrust force

Answers

Hopes this helps:

Answer:

The force that moves a plane forward through the air. Thrust is created by a propeller or a jet engine. An aircraft in straight and level flight is acted upon by four forces: lift, gravity, thrust, and drag. The opposing forces balance each other; lift equals gravity and thrust equals drag.

What are the dependent and independent variables? (Picture^^)

Answers

Answer:

X axis shows the independent and Y axis shows the dependent.

Explanation:

As the independent variable is always plotted on the X-axis of the graph the Y-axis shows the dependent variable that is affected by the X variables Time is an independent variable and is always shown along the X-axis.  Such as the image showed tells about the data of N2O biofuel emissions from 2009-10. Thus this will be plotted along the X-axis and Y-axis will show the amount of nitrogen fertilizer applied.

what is a 7 letter word that starts with f: Ancient plants and animals formed into rocks.

Answers

Answer:

Fossils?

Explanation:

Who tryna do these 3 assignments on wizer for me

Answers

Can you be more specific please

Assume the copper was not thoroughly dried. How will the following calculations be affected?

The calculated mass of copper will be too low or too high?
The calculated moles of copper will be too low or too high?
The calculated mass of chlorine will be too low or too high?
The calculated moles of chlorine will be too low or too high?

Answers

The answer should be A, I could be wrong though. Water seeps into any open crack or pore, making something denser, therefore could cause more (or less) mass.

Name the process that happens when a liquid turns into a gas.​

Answers

evaporation is when liquid turns into gas

molar mass of Mg(CO3)

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Answer:

[tex]\boxed {\boxed {\sf 84.313 \ g/mol}}[/tex]

Explanation:

The molar mass is the mass per mole of an element or substance. The values for atomic mass on the Periodic Table are used as the molar mass. Look up the molar masses for the elements in the formula.

Mg: 24.305 g/molC: 12.011 g/molO: 15.999 g/mol

Analyze the formula. Magnesium and carbon have no subscript, so there is only one atom of each. Oxygen has a subscript of 3, so there are 3 atoms and the mass has to be multiplied by 3.

MgCO₃= 24.305 + 12.011+ 3(15.999) MgCO₃= 24.305+12.011+47.997=84.313 g/mol

The molar mass of magnesium carbonate is 84.313 grams per mole.

What atom has the largest atomic radius barium calcium magnesium radium

Answers

Answer:

Radium

Explanation:

It has the highest atomic number so it would have more shells, making it larger than the others.

12
"C
What is the number of protons in this carbon atom?
ÖA 12
OB. 6
Ос.
18
OD. 24
what is the answer

Answers

Answer:

B

Explanation:

the number of protons never changes even if the atomic mass changes

Please someone help me with this!!

Answers

You’re answer would be A, when you open a parachute it captures air and shoots you upwards for a couple seconds because of how fast it slows the weight down.

When a liquid is insoluble in another liquid, the liquids are said to be?

Answers

Answer:

immiscible

Explanation:

Instruction
Active
TRY IT Writing Measurements in Scientific Notation
Choose the scientific notation that best represents the standard notation given.
6,840,000,000 m
68.4 x 108 m
6.84 x 108 m
6.84 x 10-9 m
6.84 x 109 m
0.000000000143 g
-1.43 x 1010 g
1.43 x 10-10 g
14.3 x 1010 g
14.3 x 10-10 g
COMPLETE
DONE

Answers

No se pero quiero puntos porque estoy en examen, perdonnn =(

Answer:

D & B

Explanation:

just did it

2 CH3OH + 3 02 2 CO2 + 4H2O
What is the mass of oxygen (O2) that is required to produce 579 g of carbon dioxide (CO2)?
. Your answer should have three significant figures.

Answers

Answer:

632 g

Explanation:

2CH₃OH + 3O₂ → 2CO₂ + 4H₂O

First we convert 579 g of CO₂ into moles, using its molar mass:

579 g CO₂ ÷ 44 g/mol = 13.16 mol CO₂

Then we convert CO₂ moles into O₂ moles, using the stoichiometric coefficients:

13.16 mol CO₂ * [tex]\frac{3molO_2}{2molCO_2}[/tex] = 19.74 mol O₂

Finally we convert O₂ moles into grams, using its molar mass:

19.74 mol O₂ * 32 g/mol = 632 g

A falling ball looses its shape and bounces off the ground because it has...Immersive Reader


Kinetic energy

Potential energy

Elastic energy

Thermal energy

Answers

Potential energy or Kinetic energy

A compound contains 0.5 mol Na, 0.5 mol N, and 10 mol H. The empirical formula of the
compound is -

Answers

Answer:

NaNH₂₀

Explanation:

0.5 mol Na, 0.5 mol N, and 10 mol H

To obtain the empirical formulae, we find the mole ratio between the elements and this is done by dividing all through by the smallest mol (0.5)

Na = 0.5 / 0.5 = 1

N = 0.5 / 0.5 = 1

H = 10 / 0.5 = 20

The mole ratio is used to write the empirical formulae. It is given as;

NaNH₂₀

What information does the percent composition of an atom in a molecule
give?

Answers

Answer:

percent composition tells that by mass

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