I need help with this

I Need Help With This

Answers

Answer 1

Answer:

87 (whatever unit its using)


Related Questions

What gas in our atmosphere is thought to have come from plants and algae alone?

Answers

Answer:

Oxegen

Explanation:

All that oxygen has to come from somewhere. You might already know that it comes from photosynthetic organisms like plants.

There is 200 grams of water on a stove. The water is currently 25 C. How much energy in joules must be used to raise the water to 90 C?

Answers

Answer:

q

=

64 kJ this is answer. .

One of the few resources on Mars is

Answers

Answer:

iron .. titanium.. nickel....aluminum... sulfur... and calcium

Describe the nucleus of the
atom.

Answers

Answer:

The nucleus of atom is composed of two subatomic particles that each have charges.

Protons, which are positively charged particles.Neutrons, which are neutrally charged particles.

Both reside in the nucleus of an atom. The amount of protons and neutrons (Electrons can to) is what helps us identify each atom apart. Electrons are NOT in the nucleus of atom but orbit it in outer layers called orbitals.


c) ¿Qué ocurriría si tenemos disueltos 200 g de
nitrato de potasio en 300 g de agua a 60°C
y enfriamos la disolución hasta los 10 °C?

Answers

ayyyy amiga la mera neta no se perdón hahaha sorrey

why does magnesium in an aqueous solution of magnesium chloride conduct electricity but solid magnesium chloride does not?

Answers

Answer:

Delocalized electrons

Explanation:

Magnesium Chloride is an ionic compound, so its lattice structure prevents the flow of electrons. However, when you convert the ionic compound into an aqueous solution it allows movement of electrons/ions due to the breakdown of the molecular forces which make it conductible. In short, Ionic compounds as a solid are not conductible but they are in an aqueous form.

The electron configuration for Helium (He) is shown below.

1s2

Which diagram shows the correct distribution of electrons in the electron shells of a helium atom?

Answers

Answer:

3rd image

Explanation:

What can you say about the reactants of photosynthesis and the products of cellular respiration?​

Answers

Answer:

The reactants of cellular respiration are oxygen and sugar, which are the products of photosynthesis

Explanation:

write True If the statement Is Correct And False If Not​

Answers

Answer:

11.false12.true13.true14.false15.true16.false17.false18.false19.true20.false

21.PC22.CC23.PC24.CC25.CC

Explanation:

I think it is helps you

How many different types of atoms are in the formula Ba(OH)2 • 8H2O?

A)3
B)2
C)11
D)22

Answers

The answer should be A.

Why?
“Different type of atoms” which refers to different element present in the compound. Only Barium, Oxygen, and Hydrogen found in that compound, thus there are 3 types of atom founded it hydrated barium hydroxide.

I hope this enlighten. Apologize for any English or Chemistry concepts.

a brief description of atoms and how they relate to
molecules and compounds

Answers

Answer:

Explanation:

Atoms are the thing that make up molecules and compounds. Molecules contain two or more atoms and are held together by covalent bonds

How many grams of hydrogen are needed to fully react 621. 9 grams of nitrogen gas.

Answers

Answer:

9 grams of nitrogen gas

Explanation:



Question
How are chemical equations balanced?

Answers

Answer:

According to the law of conservation of mass, when a chemical reaction occurs, the mass of the products should be equal to the mass of the reactants. A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side

Some copper is palced in a previouly weighted crucible and reweighed .
Mass of crucible + copper = 5.92g
Mass of crucible = 4.65g
Clculate the mass of copper used in the experiment

Answers

Answer:  1.27g (mass of Copper)

Explanation:

We can find the mass of copper by finding the difference between the mass of the crucible and the copper, and just the crucible. This is possible since the mass that is left would be attributed to just the copper.

Mass of copper = (Mass of crucible + copper) - Mass of crucible

                          = 5.92 g - 4.65 g

                          = 1.27 g

Which are effects of long-term exposure to mustard gas? Select all that apply. One, some, or all responses may be correct.

Answers

The effects of long-term exposure to mustard gas causes mortality and chronic respiratory disease.

Exposure to mustard gas in the long term can result in mortality from influenza, pneumonia as well as chronic breathing disease. Exposure for long term leads to respiratory complications and septic shock. Extensive breathing in the environment of mustard gas can cause chronic respiratory disease, respiratory infections or death.

Extensive eye exposure to this gas can cause permanent blindness. Exposure to mustard gas may also increase the chances of lung and respiratory cancer so we can conclude that mustard gas is lethal and can cause a number of diseases in a person who is exposed to it.

Learn more: https://brainly.com/question/25686553

Which set of laboratory equipment would most likely be used with a crucible

Answers

Answer:

That should be crucible tong

Please help I will give brainliest ;3

Answers

Answer:

oxygen, carbondioxide

carbondioxide, oxygen

Oxygen, carbon monoxide,Oxygen, carbon monoxide

đơn chất nào sau đây tác dụng với dung dịch axit sunfuric loãng sinh ra khí ?
a đồng
b cacbon
c nhôm
d lưu huỳnh

Answers

Answer:

C. Al

Explanation:

2Al+ 3H2SO4(l)------> Al2(SO4)3+ 3H2

An unknown element X forms a compound with chlorine: XCL2. Predict the chemical formula of the compound that element X makes with oxygen. Justify your answer.​

Answers

hold on i’m gonna go check really quick

carbon reduction process is not applied for extraction of alkali metal . why ?​

Answers

Answer:

The alkali metals are the highly electropositive metals. Highly electropositive metals cannot be extraction carbon reduction process, because these metals do not react with carbon

Explanation:

What causes streams to form?
O absorption
O precipitation
O glaciers
O lakes

Answers

Answer: essay the answer is B: precipitation

Explanation:

balance CHCl3 + O2 = CO2 + H2O + Cl2

Answers

Answer:

2CHCl3 + 5/2 O2 => 2CO2 + H20 + 3Cl2

Explanation:

Left Hand Side(LHS)

We have CHCl3 and O2

Right Hand Side(RHS)

We have CO2, H2O and Cl2

Balancing

To make sure that they have same values, put 2 before CHCl3 giving 2CHCl3 and 3 on Cl2(RHS) for chlorine gas giving 3Cl2

H2O remains the same

Before CO2 put 2 giving 2CO2

To make sure that oxygen is balanced put 5/2 before it. This gives 5/2 O2 (2 cancels out don't worry)

Combining all;

2CHCl3 + 5/2 O2 => 2CO2 + H20 + 3Cl2

I hope this helps. Have a nice studies.

Carbon tetrachlordie (CCI4) is ___

A. iconic

B. Covalent

Answers

Answer:

b

Explanation:

can anyone tell me "what are the exceptions of law of reciprocal proportions??"​

Answers

The law states that if two different elements combine separately with a fixed mass of a third element, the ratio of the masses in which they combine are either the same or are in simple multiple ratio of the masses in which they combine with each other .

Do all particles pass right through the atoms undeflected?​

Answers

AnswereYs

Explanatioynt:Yes

I need help with this question please

Answers

1-propanol is the correct answer.

What is the mass of 1,300 cm of gasoline? The density of gasoline is 0.67 g/cm.

Answers

Answer:

Volume x Density = Mass of a substance

1300 x 0.67 = 871

The mass is 871 (unit)

please help pick more then one answer!!!

Select all the correct answers.

How will the results of the Human Genome Project benefit the future of genetics? (Select all that apply.)

A. Scientists can develop better diagnostic methods for genetic diseases.

B. Scientists can successfully prevent the occurrence of genetic diseases in humans.

C. Scientists can prevent the process of human aging.

D. Scientists can compare the genomes of humans and other different organisms.

E. Scientists can produce organisms more superior than humans.​

Answers

Answer: A. B.

Explanation:

how long does it take to rehydrate after being dehydrated

Answers

Answer:

up to 120 minutes to digest water and rehydrate your body


9) What is the final pressure in the container shown below after the valve is opened and the gases are allowed
to flow? (The gases do not act)
0
4.00 am
3.00


NE
2.00 am
2.00 L

Answers

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

We have 2 containers connected by a valve.

One container has a volume of 3.00 L and contains O₂ at 4.00 atm. The other container has a volume of 2.00 L and contains Ne at 2.00 atm.

When the valve is opened, the total volume is the sum of the 2 containers.

[tex]V_2 = 3.00 L + 2.00 L = 5.00 L[/tex]

Assuming constant temperature and ideal behavior, we can calculate the final pressure of each gas using Boyle's law.

O₂

[tex]P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{4.00atm \times 3.00L}{5.00L} = 2.40atm[/tex]

Ne

[tex]P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{2.00atm \times 2.00L}{5.00L} = 0.800atm[/tex]

The final pressure in the container will be the sum of the final pressures of the gases.

[tex]P = 2.40 atm + 0.800 atm = 3.20 atm[/tex]

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

Learn more: https://brainly.com/question/1437490

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