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Answer:

F

parasite

Explanation:

Answer:

the answer would be b

Explanation:

the body sytsem needs to depend on eah other in order to work

Body systems are like runners in a marathon, who each run alone and don't need the other runners to finish the race, is not a good way to describe a body system, hence option B is correct.

Your digestive tract takes nutrients and water from the food you eat in to your body. The body's cells receive oxygen, water, and nutrients through your circulatory system.

Your skin, excretory system, and respiratory system all function to remove wastes from your cells.

Your body's many systems depend on one another to function properly. While your heart's muscles require oxygen from your lungs to beat, your respiratory system depends on your circulatory system to distribute the oxygen it collects.

Therefore, option B is correct.

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Answer:

C.Universal indicator turns orange in

weak acid.

Explanation:

option A and B are incorrect coz universal indicator turns red in strong acid and in strong alkali (base) it turns blue

Answer 4.45 moles

Explanation:

Answer:

3

Explanation:

The plates are moving away from each other

Answer: energy is transferred through vibration of air particles or particles of a solid through which the sound travels.

Answer:

Sound is transmitted by vibrating a object and the waves move through particles.

Explanation:

Answer:

all of em, unless the bear is normal to the environment

Answer:

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. Pure substances are further classified as elements and compounds. An element is a substance that consists of only one type or kind of atom

Answer:

define the term pure substance​ :

A pure substance does not have to be of a single element or compound, This can either be one single element or one single compound, but every sample of this substance that you examine must contain exactly the same thing with a fixed, definite set of properties

Explanation:

Answer:

True

Explanation:

Answer:

True

Explanation:

Hormones  are chemical messengers secreted into blood or extracellular fluid by one cell that affect the functioning of other cells. Most hormones circulate in blood, coming into contact with essentially all cells. However, a given hormone usually affects only a limited number of cells, which are called target cells.

Answer:

sulfuric acid

Explanation:

The conjugate acid of HSO4 -1 is H2 SO4. Adding one hydrogen ion to the hydrogen sulfate ion generates the conjugate acid. Its name is sulfuric acid.

Answer:

Explanation:

Solid is a hard and not able to flow; not like a liquid or gas. Having no holes; not hollow. Something that is not liquid and gas. Solid has fixed volume but not a fixed shape.

The liquid is something that flows freely; a substance that is not solid or gas.

Gas is a substance that neither liquid nor solid, e.g. air.

Plasma is an electrically neutral ionized gas in an electric discharge; distinctly different from solids and liquids and normal gases.

Therefore, the correct answer is C. solid.

Answer:

A. Liquid

Explanation:

the guy above me is wrong

Answer:

Corona

Explanation:

The outermost layer of the sun's atmosphere is called the corona, meaning “crown.” The corona is formed of thin wisps of gas that extend outward into space for millions of miles. It is much less bright than the photosphere, so we can only see it if the rest of the sun is blotted out, for example during a solar eclipse.

Answer:

58.53 L

Explanation:

Ideal gas equation is

PV = nRT

P - the pressure of the gas = 104.5  KPa

V- the volume occupied by the gas

n  - the number of moles of gas =2.50

R - the universal gas constant, usually given as  0.0821 atm.L/(mol K)

T - the absolute temperature of the gas.= 298K

[tex]V =\frac{nRT}{P}[/tex]

Now substituting vales we get

[tex]V = \frac{2.5\times0.0821\times298}{104.5\times1000}[/tex]

V = 58.53 L

[tex]\huge{\mathbb{\tt { QUESTION↓}}}[/tex]

1. Built the first American A.C. generator.

2. Found a relationship between electricity and magnetism.

3. Associated with gas and oil.

4. First workable electric light bulb.

5. Developed the equations E=mc^2

6. Provides majority of the energy in the United States.

7. Splitting heavy atoms

8. Produces plutonium

9. Powered by falling water or stream pressure

10. Thin silicon slices

11. Using heat from the earth

[tex]\huge{\mathbb{\tt {ANSWER↓}}}[/tex]

[tex]\color{black}{\tt {1.) \: h. \: Westing \: house}}[/tex]

[tex]\color{black}{\tt {2.) \: Oersted}}[/tex]

[tex]\color{black}{\tt {3.) \: j. Gas \: and \: oil}}[/tex]

[tex]\color{black}{\tt {4.) \: c.Edison}}[/tex]

[tex]\color{black}{\tt { 5.) \: d. Einstein}}[/tex]

[tex]\color{black}{\tt {6.)i.solar cells}}[/tex]

[tex]\color{black}{\tt { 7.) \: g. fission}}[/tex]

[tex]\color{black}{\tt { 8.) Sorry \: but \: I \: don't \: know \: the \: answer}}[/tex]

[tex]\color{black}{\tt { 9.) Sorry \: but \: i \: don't \: know \: the \: answer}}[/tex]

[tex]\color{black}{\tt { 10. ) \: Sorry \: \: But \: I \: don't \: know \: the \: answer }} [/tex]

[tex]\color{black}{\tt {11.) \: b. Geothermal}}[/tex]

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Answer:

[tex]C_7H_6O_2[/tex]

Explanation:

Hello there!

In this case, we can divide the problem in three stages: (1) determine the empirical formula with the combustion analysis, (2) compute the molar mass of acid via the moles of the acid in the neutralization and (3) determine the molecular formula.

(1) In this case, since 8.58 g of carbon dioxide are released, we can first compute the moles of carbon in the compound:

[tex]n_C=8.58gCO_2*\frac{1molCO_2}{44.01gCO_2}*\frac{1molC}{1molCO_2}=0.195molC[/tex]

And the moles of hydrogen due to the produced 1.50 grams of water:

[tex]n_H=1.50gH_2O*\frac{1molH_2O}{18.02gH_2O}*\frac{2molH}{1molH_2O} =0.166molH[/tex]

Next, to compute the mass and moles of oxygen, we need to use the initial 3.4 g of the acid:

[tex]m_O=3.4g-0.195molC*\frac{12.01gC}{1molC}-0.166molH*\frac{1.01gH}{1molH} =0.89gO\\\\n_O=0.89gO*\frac{1molO}{16.0gO}=0.0556molO[/tex]

Thus, the subscripts in the empirical formula are:

[tex]C=\frac{0.195}{0.0556}=3.5 \\\\H=\frac{0.166}{0.0556}=3\\\\O=\frac{0.0556}{0.0556}=1\\\\C_7H_6O_2[/tex]

As they cannot be fractions.

(2) In this case, since the acid is monoprotic, we can compute the moles by multiplying the concentration and volume of KOH:

[tex]n_{KOH}=0.279L*0.1mol/L\\\\n_{KOH}=0.0279mol[/tex]

Which are equal to the moles of the acid:

[tex]n_{acid}=0.0279mol[/tex]

And the molar mass:

[tex]MM_{acid}=\frac{3.4g}{0.0279mol} =121.86g/mol[/tex]

(3) Finally, since the molar mass of the empirical formula is:

7*12.01 + 6*1.01 + 2*16.00 = 122.13 g/mol

Thus, since the ratio of molar masses is 122.86/122.13 = 1, we infer that the empirical formula equals the molecular one:

[tex]C_7H_6O_2[/tex]

Best regards!

Answer:

It's trueeeeeee:))))))

Answer:

TRUE

Explanation:

Answer:

78.96 grams

Explanation:

I looked it up and that's what I found

hope it helps

Answer:

78.96 g mol

Explanation:

78.96 g mol

in the period table the mass of Se is 78.96 g mol

Answer:

1.) b

2.) c

3.) e

4.) g

5.) j

6.) k

HOPE THIS HELPS

-Todo <3

Explanation:

Answer:B, C, F, G, I, L.

Explanation: i think that these are the correct one there was not a whole lot of contects on the question

Answer: I go search some information

Explanation:I come back with a answer

Answer:

i fond nothing sooory

pic so PC

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \red{ \underline{ \large \orange{\tt{ ꧁ A \: N\: S \: W \: E \: R ꧂}}}}[/tex]

✧ [tex] \large{ \red{\tt{E\:X \: O \: T \: H \: E \: R \: M \: I \: C \: \: R \: E \: A \: C \: T\: I \: O \: N}} : }[/tex]

☃ The chemical reaction in which heat is released to the surroundings is called exothermic reaction. The amount of heat energy released is written along with products. This indicates that heat is given out.

[tex] \pink{ \text{Any \: two \: balanced \: equation \: for \: Exothermic \: changes}} : [/tex]

ツ Hope I helped! ♡

☂ Have a wonderful day / night ! ☄

[tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex] ✎

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Answer:

c. 5days

Explanation:

there is no question but if it's a graph

the answer is 5days

Answer:

placental mammals

Explanation:

Answer:

B) placental mammals

Explanation:

Answer:

yes it is already balanced

just a tricky question!!

Explanation:

Answer:

Well, he needs to take one more electron to have a stable structure. And by doing that the atom will have more electrons than protons and will turn into a negative ion.

i find the answer in (Limiting Reactants and Excess ws_KEY.pdf)  

make a search for it it's the first link

According to stoichiometry and balanced chemical equation, 6.18 moles of hydrogen are formed and HBr is the limiting reactant.

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is used in balancing chemical equations.

In the given chemical reaction,when 3.22 moles of Al reacts with 4.96 moles of HBr₃ total of 3.22+4.96= 8.18 moles are formed.Out of which according to reaction of  which 6 moles are of hydrogen so thus,to find moles of hydrogen formed 8.18-2=6.18 moles of hydrogen are formed.

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