HELP ME PLEASE I will mark brainliest

Answer:

The correct option is A

Explanation:

Water from a river is used for many activities in a community. These activities could include (but not limited to) tourism, drinking for animals, local transport, irrigation for nearby farming, recreation (as in swimming), habitat for some living organisms among others. Rivers are not limited by what limits the influence of oceans such as taste (it's saltiness, which cannot be used in farming also) and wave current.

Answer:

I think this the right answer maybe, the space between neurons is called a synapse. The nucleus of a neuron is located in the cell body. Axons carry messages toward the cell body. These are the true ones I think.

Explanation:

Answer:

1,2, and 4

Explanation:

Answer:

The answer to the question, 'which statement describe the formation of diamonds is option C. Diamond deposits are formed in the earth mantle and release to the earth surface by mean of volcanic eruptions which produce kimberlites. The formation of diamonds require very high temperatures and pressures. These conditions exist below the earth surface at the depth of about 150 kilometers and 1050 degree Celsius temperature.

Explanation:

Answer:

Diamond deposits are formed in the earth mantle and release to the earth surface by mean of volcanic eruptions which produce kimberlites

Explanation:

Answer:

The rotation of the Earth.

Answer:

love u baby doll thanks for the help

Answer:

16.2 J

Explanation:

Step 1: Given data

Step 2: Calculate the mass of bromine

The density is equal to the mass divided by the volume.

ρ = m/V

m = ρ × V

m = 3.12 g/mL × 10.0 mL

m = 31.2 g

Step 3: Calculate the change in the temperature (ΔT)

ΔT = 27.30 °C - 25.00 °C = 2.30 °C

The change in the temperature on the Celsius scale is equal to the change in the temperature on the Kelvin scale. Then, 2.30 °C = 2.30 K.

Step 4: Calculate the heat required (Q) to raise the temperature of the liquid bromine

We will use the following expression.

Q = c × m × ΔT

Q = 0.226 J/g.K × 31.2 g × 2.30 K

Q = 16.2 J

Answer:

1) The chemical equation is:

Al +  CuCl2 ---> Cu + AlCl3

2) You have to balance the equation to state the coefficients:

2Al + 3CuCl2 ---> 3Cu + 2Al Cl3

3) Now the coefficients tell you the molar ratios.

2 mol Al : 3 mol CuCl2 : 3 mol Cu : 2 mol AlCl3

4) The molar ratio of CuCl2 to Al is:

3 mol Cu Cl2 / 2 mol Al = 3/2 = 1.5

Explanation:

Answer:

Designing= $42 per designer hour

Sizing and cutting= $26.85 per machine hour

Stitching and trimming= $17.75 per labor hour

Wrapping and packing= $10.5 finished unit

Explanation:

To calculate the activity-based overhead rates, we need to use the following formula:

Predetermined manufacturing overhead rate= total estimated overhead costs for the period/ total amount of allocation base

Designing= 445,200/10,600= $42 per designer hour

Sizing and cutting= 4,081,200/152,000= $26.85 per machine hour

Stitching and trimming= 1,491,000/84,000= $17.75 per labor hour

Wrapping and packing= 346,500/33,000= $10.5 finished unit

Answer:

All of them except NaCl

Explanation:

Organic compounds are compound that basically contain carbon-hydogen bonds. Salt (NaCl) doesn't have carbon, and the rest does. So I think that A, C, and D are the answers.

I hope this helps!

Answer:

B= 2

Explanation:

Chemical equation:

Ca + F      →   CaF₂  

Balance chemical equation:

Ca + 2F      →   CaF₂  

Step 1:

Ca + F      →   CaF₂

Left hand side             right hand side

Ca = 1                             Ca = 1

F = 1                                F = 2

Step 2:

Ca + 2F      →   CaF₂

Left hand side             right hand side

Ca = 1                             Ca = 1

F =  2                              F = 2

Answer:In a chemistry experiment, 10g of urea, NH2CONH2 (s), is dissolved in 150 mL of water in a simple calorimeter. A temperature decrease of 3.7oC is measured. Calculate the molar enthalpy of solution (∆Hs). ... an ideal gas B if 0.622 g sample of gas B occupies a volume of 300 mL at 35 °C and 1.038 atm.

Explanation:

Answer:

Sorry i don't know the answer

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buy if you don't mind then i want to ask something

Which class question is this?

Answer:

what LOLLLL

Explanation:

Answer:

....................

Explanation:

Answer:

The answer is partial charge 8+.

Answer:

D. 15.8atm

Explanation:

Given parameters:

Initial pressure = 13atm

Initial temperature  = 34°C = 34 + 273  = 307K

Final temperature  = 100°C = 100 + 273  = 373K

Unknown:

Final pressure  = ?

Solution:

To solve this problem, we apply a derivation of the combined gas law taking the volume as a constant.

The expression is shown mathematically below;

        [tex]\frac{P_{1} }{T_{1} }[/tex]   = [tex]\frac{P_{2} }{T_{2} }[/tex]

P and T pressure and temperature values

1 and 2 are initial and final states

 Insert the parameters and solve for T₂;

    [tex]\frac{13}{307}[/tex]   = [tex]\frac{P_{2} }{373}[/tex]  

        P₂  = 15.8atm

The final pressure will be "15.8 atm".

According to the question,

Initial pressure,

[tex]P_1 = 13.0 \ atm[/tex]

Initial temperature,

[tex]T_1 = 34+273[/tex]

    [tex]= 307 \ k[/tex]

Final temperature,

[tex]T_2 = 100+273[/tex]

    [tex]= 372 \ k[/tex]

By using the Gay-Lussac's law of pressure and temperature, we get

→     [tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]

or,

→     [tex]P_2 = \frac{P_1\times T_2}{T_1}[/tex]

By substituting the values, we get

→          [tex]= \frac{13.0\times 373}{307}[/tex]

→          [tex]= 15.8 \ atm[/tex]

Thus the response above is right.

Learn more:

https://brainly.com/question/24191545

Answer:

[tex]P_T=504torr[/tex]

Explanation:

Hello!

In this case, since the Dalton's law states that the total pressure inside a container full of various gases is equal to the addition of the pressure of each gas, for the given mixture containing nitrogen, oxygen and helium we have:

[tex]P_T=P_{N_2}+P_{O_2}+P_{He}[/tex]

Thus, by plugging in each partial pressure, we obtain the total pressure of the mixture as shown below:

[tex]P_T=211torr+135torr+158torr\\\\P_T=504torr[/tex]

Best regards.

Answer: H2Te

Explanation:

H2Te has the highest molecular weight and thus it has the highest boiling point from H2S and H2Se.

Answer:

a. Theoretical yield = 8.81 g

b. 77 %

Explanation:

We begin from the reaction:

2Fe (s) + 3Cl₂ (g) → 2FeCl₃ (s)

and the excess is the iron, so the limiting reagent is the chlorine.

We convert mass to moles → 5.78 g / 70.90 g/mol = 0.0815 mol

Ratio is 3:2 so we think this:

From 3 moles of chlorine, I can produce 2 moles of Iron (III) chloride

Then 0.0815 moles would produce (0.0815 . 2) /3 = 0.0543 moles

This is the theoretical yield. We convert the moles to mass:

0.0543 mol . 162.2 g /mol = 8.81 g

If the reaction yields 6.79 g of FeCl₃ and the theoretical yield is 8.81 g ,we can obtain the percent yield: (6.79 / 8.81) . 100 = 77 %

Answer:

Butane : CH3 - CH2 - CH2 - CH3

Explanation:

The word Butane has "But" as preffix which stands for 4 carbon atoms & "ane" as suffix which tells that the compound is of alkane homologous series .

Answer:

molarity of Cl⁻ ions = 5.0 M

Explanation:

The molarity of a solution expresses the amount in moles of a solution present in a litre of solvent. Its unit is mol/L or mol/dm³ written as M.

MgCl₂ when dissolved to form an aqueous solution dissociates into positive and negative ions, Mg²⁺and Cl⁻ ions.

Equation of the dissociation of MgCl₂ in aqueous solution is given below:

MgCl₂(aq) -----> Mg²⁺(aq) + 2Cl⁻(aq)

1 mole of aqueous MgCl₂ produces 2 moles of chloride ions, Cl⁻

Molar concentration of MgCl₂(aq) = 2.5 M

Molarity of chloride ions = number of moles of Cl⁻ ions * molarity of MgCl₂

molarity of Cl⁻ ions = 2 * 2.5 M

molarity of Cl⁻ ions = 5.0 M

Answer:

212724 plates

Explanation:

To solve this problem we use the formula:

N = 5.54 (tr/W₀.₅)²

Where

We solve for N:

Answer:if a rock sinks, it is more dense than water. Liquid Density examples based upon differences in mass or weight per unit volume. Density of a liquid with a constant volume, varies according to the weight. The higher the weight, the higher the density.

Explanation:

Answer:

True

Explanation:

N2 + 3h2 - 2NH3 is indeed a balanced equation therefore it is a "true statement" or option A. You can tell this equation is balanced because it has the same number of Nitrogen, and Hydrogen atoms on the same side keeping the equation balanced.

Hope this helps.

Answer:

1

Explanation:

because its to long just why its useless

Answer:

Sodium and chlorine ions come together to form sodium chloride or NaCl. The sodium atom in this compound loses an electron to become Na+, while the chlorine atom gains an electron to become Cl-. Together, they form a neutral compound because the ions balance each other out.

Explanation:

Answer:

Continuously recurring, or cycling maybe?

Answer:

a process that recirculates earth's water through the stages of evaporation condensation and collection. The water from lakes, oceans, rivers and other water bodies began to evaporate vapor from the water bodies, condensates and the clouds later causing precipitation

Answer: Divergent boundaries -- where new crust is generated as the plates pull away from each other. Convergent boundaries -- where crust is destroyed as one plate dives under another. Transform boundaries -- where crust is neither produced nor destroyed as the plates slide horizontally past each other.

Explanation:

earthquakes volcanos n stuff like that

Answer:

C

Explanation:

The train has significantly more momentum by the car, hence there is little change in the train's momentum after collision..

please mark brainliest

B. Hope this helps. If not, am sorry. Bye.