Identify this molecule:
a) alcohol
b) hydrocarbon
c) carbohydrate
d) lipid
e) amino acid

Answer:

Greenhouse gases (GHG) include carbon dioxide, water vapor, methane, ozone, nitrous oxide and fluorinated gases. These molecules in our atmosphere are called greenhouse gases because they absorb heat.

Explanation:

Answer:

Ice act and help in condensation of the vapor

Explanation:

The energy released when gaseous water vapor condenses to form liquid water droplets is called latent heat. Latent heat from condensation causes an increase in air temperature surrounding the water droplets. The warmer air rises, causing the water vapor to condense when it meets cooler air at a higher altitude

Answer: c

Explanation: just took the test and got it right

Answer:

C

Explanation:

Well Its called reaction force,  so that helps you figure out what direction she would go towards. When you use anything that has reaction force what way are they normally going? So thats why she stayed still.

Answer:

The balanced equation for this reaction is C2H2 + 502 + 4H2O + 3C02. What volume of carbon dioxide is produced when 2.8 L of oxygen are consumed? 25Explanation:

Answer:

CH3CH2OH

Explanation:

The reactant has:

- 6 carbon atoms

- 12 hydrogen atoms

- 6 oxygen atoms

The second product has:

- 4 oxygen atoms

- 2 carbon atoms

In 2CH3CH2OH there are:

- 4 carbon atoms

- 12 hydrogen atoms

- 2 oxygen atoms

If you combine the number of atoms of each chemical species of both 2CH3CH2OH and the second product, you will see that you get the same number of atoms of each chemical species in the reactant:

carbon = 2 + 4 = 6 (number of carbon atoms in reactant)

oxygen = 4 + 2 = 6 (number of oxygen atoms in reactant)

hydrogen = 0 + 12 = 12 (number of hydrogen atoms in reactant)

This means that no atoms were created or destroyed which is true for all equations. If this was done with one of the other compounds listed, atoms would have been created or destroyed which cannot happen. In all equations, atoms are never created or destroyed, however they do rearrange to form new products.

Answer:

hoping this is a 2 mark answer a,b

Explanation:

electrons were the first subatomic particle to be discovered

protons + proton = repel

proton + electron = attract

Answer:

do u know what the answer is yet

Explanation:

Answer:

chemical fertilizers increase crop production; their overuse has hardened the soil, decreased fertility, strengthened pesticides, polluted air and water

Answer:

14) balanced

15) Unbalanced

I hope it helps.

Answer: Trail 2

Explanation: Because it has a pressure of 1 atm

Answer:

Life is based on carbon; organic chemistry studies compounds in which carbon is a central element. The properties of carbon make it the backbone of the organic molecules which form living matter. Carbon is a such a versatile element because it can form four covalent bonds.

Explanation:

brainliest pls

Organic chemistry is based on carbon because the property of carbon catenation is tetravalent due to which most of the organic compounds are carbon compounds.

Organic chemistry is the branch of chemistry that studies carbonic compounds or organic compounds, which are those formed by carbon atoms. In short, organic chemistry is the study of carbon compounds.

The answer is based on the way carbon combines with other chemical elements to form molecules. For example, hydrogen atoms only bond to one atom, oxygen to two atoms. Carbon is a particularly versatile chemical element, as it can bond with four atoms at once.

See more about carbon at brainly.com/question/22530423

Answer:

    All species in a given region interact with all nonliving objects to form an ecosystem. Animals, plants, and bacteria are examples of living organisms. Water, soil, rocks, and the sun are all nonliving objects. Biotic components are living organisms, while abiotic components are nonliving organisms.

    Biotic components come in a variety of shapes and sizes. Producers are living entities that convert the sun's energy, water, and carbon dioxide into fuel through a process called photosynthesis. Producers create the compounds that underpin all life on Earth, including plants, algae, and bacteria.

I rephrased this...

This problem is providing us with the percent composition of a compound containing magnesium, nitrogen, oxygen and water. Thus, the empirical formula is required and found to be Mg(NO₃)₂·6H₂O.

In chemistry, empirical formulas are used in order to figure out the minimum whole-number representation of a molecular formula, which contains the actual number of atoms.

Thus, we start determining it by assuming the given percentages as masses and calculating the moles with the atomic or molar mass of the involved species:

[tex]n_{Mg}=\frac{9.37}{24.3} =0.386\\\\n_{N}=\frac{10.3}{14.01}=0.735\\ \\n_O=\frac{37.52}{16.00}=2.32\\ \\n_{H_2O}=\frac{42.18}{18.02}=2.34[/tex]

Next, we divide by the 0.386 as the smallest number of moles in order to determine their subscripts in the chemical formula:

 [tex]Mg}=\frac{0.386}{0.386} =1\\\\n_{N}=\frac{0.735}{0.386}=2\\\\n_O=\frac{2.32}{0.386}=6\\\\n_{H_2O}=\frac{2.34}{0.386}=6[/tex]

Hence, the empirical formula turns out to be Mg(NO₃)₂·6H₂O, which is actually a hydrate (hexahydrate).

Learn more about percent composition: brainly.com/question/12247957

Answer:

that is true

Explanation:

the chemical changed reaction

O₂ reacts increasing the NO₂ to 0.718 moles. At the return to equilibrium,

the amount SO₃ in the container approximately 0.931 moles.

The equilibrium constant for the reaction aA + bB ⇌ cC + dD is presented as follows;

[tex]K_c = \mathbf{\dfrac{[C]^c_{eq} +[D]^d_{eq} }{[A]^a_{eq} +[B]^b_{eq} }}[/tex]

The equilibrium constant for the reaction, whereby the volume is same for the contents is therefore;

[tex]K = \dfrac{0.654 \times 0.718}{0.369 \times 0.369} \approx 3.45[/tex]

Given that the NO reacts with the O₂ as follows;

2NO + O₂ [tex]\longrightarrow[/tex] 2NO₂

We have;

The number of moles of NO₂ added = 0.718 moles

The new number of moles are therefore;

Which gives;

0 = (0.654 + x) × x - 3.45 × (0.369 × (0.369 + 0.718)

2.45·x² - 5.6772·x + 1.384 = 0

[tex]x = \dfrac{5.6772 \pm \sqrt{(-5.6772)^2 - 4 \times 2.45 \times (1.3834)} }{2\times 2.45}[/tex]

x ≈ 0.2768 or x ≈ 2.04

The possible number of moles of SO₃ in the container after equilibrium is reestablished is therefore;

n ≈ 0.654 + 0.2768 ≈ 0.931

Learn more about equilibrium constant here:

https://brainly.com/question/10444736

Answer:LOL ITS PHYSICAL PROPERTIES

Explanation:IT IS TRUST ME

Answer:

How many grams of H2 can be produced from the reaction of 11.5 grams of sodium with an excess of water? Hint: 2Na + 2H2O ---> 2NaOH + H2. Ans: 0.505g .

Explanation:

this is your correct answer mark me brainest

Answer:

The idea here is that you can use the heat absorbed by the solution to find the heat given off by the dissolution of the salt.

More specifically, you can assume that

Δ

H

diss

=

−

q

solution

The minus sign is used here because heat lost carries a negative sign.

To find the heat absorbed by the solution, you can use the equation

q

=

m

⋅

c

⋅

Δ

T

−−−−−−−−−−−−−

Here

q

is the heat gained by the water

m

is the mass of the water

c

is the specific heat of water

Δ

T

is the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

As the problem suggests, you can approximate the mass and the specific heat of the solution to be equal to those of the pure water sample.

The temperature increases by

0.121

∘

C

, so you know that

Δ

T

=

0.121

∘

C

→

positive because the final temperature is higher than the initial temperature

Plug in your values to find

q

=

125

g

⋅

4.18 J

g

−

1

∘

C

−

1

⋅

0.121

∘

C

q

=

63.22 J

So, you know that the solution absorbed

63.22 J

, which implies that the dissolution of the salt gave off

63.22 J

. In other words, you have

Δ

H

diss

=

−

63.22 J

Convert the mass of sodium hydroxide to moles by using the compound's molar mass

2.4

⋅

10

−

4

g

⋅

1 mole NaOH

39.997

g

=

6.00

⋅

10

−

6

moles NaOH

You know that the enthalpy of dissolution when

6.00

⋅

10

−

6

moles of sodium hydroxide are dissolved in water, so use this info to find the enthalpy of dissolution when

1

mole of the salt dissolves

1

mole NaOH

⋅

−

63.22 J

6.00

⋅

10

−

6

moles NaOH

=

−

1.054

⋅

10

7

J

Finally, convert this to kilojoules

1.054

⋅

10

7

J

⋅

1 kJ

10

3

J

=

1.054

⋅

10

4

kJ

Therefore, you can say that the enthalpy of dissolution, or molar enthalpy of dissolution, for sodium hydroxide is

Δ

H

diss

=

−

1.1

⋅

10

4

.

kJ mol

−

1

−−−−−−−−−−−−−−−−−−−−−−−−−−−

The answer is rounded to two sig figs, the number fo sig figs you have for the mass of sodium hydroxide.

SIDE NOTE The accepted value for the enthalpy of dissolution of sodium hydroxide in water at

25

∘

C

is

Δ

H

diss

=

−

44.51 kJ

Explanation:

i hope its right

Based on the principle of conservation of energy, the heat capacity of the calorimeter is calculated using the formula:

A calorimeter is an equipment used to determine heat of reaction.

The calorimeter works on the principle of conservation of energy:

Quantity of heat energy is calculated using the formula below:

In the experiment, the following procedure is followed:

Assuming that;

Therefore, the heat capacity of the calorimeter is calculated using the formula:

Learn more about calorimeters at: https://brainly.com/question/1407669

Answer:

copy and paste them into the search and all of the answers come up trust me

Explanation:

Answer:

Benzene is an organic chemical compound with the molecular formula C₆H₆. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, benzene is classed as a hydrocarbon.

Explanation:

Varroa mites, viruses, and European foulbrood

Answer:

CCD is likely to result from a combination of pathogens, such as Varroa mites, viruses and European foulbrood: issues related to nutrition, such as undernourished or malnourishment

Answer:

52.0 gof CO2 contains 7.1 *10^23 molecules

1 molecule of CO2 has a mass of 7.3*10^-23 grams

Explanation:

Step 1: Data given

Mass of CO2 = 52.0 grams

Molar mass of CO2 = 44.01 g/mol

Number of Avogadro = 6.022 * 10^23 / mol

Step 2: Calculate moles of CO2

Moles CO2 = Mass CO2 / molar mass CO2

Moles CO2 = 52.0 grams / 44.01 g/mol

Moles CO2 = 1.18 moles

Step 3: Calculate molecules in 1.18 moles CO2

Number of molecules = 1.18 moles * 6.022*10^23 = 7.1 *10^23 molecules

1 molecule of CO2

Number of moles = 1 / 6.022*10^23

Number of moles = 1.66 *10^-24

Mass CO2 = 1.66*10^-24 moles * 44.01 g/mol

Mass CO2 = 7.3*10^-23 grams

Answer:

When the light energy from sunlight hits matter, heat energy is formed

Answer:

A

Explanation:

when light energy hit matter heat energy formed