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3 years ago

Which factor of production would water be considered?

Chemistry

2 answers:

mamaluj [8]3 years ago

6 0

Explanation:

land.

I think it is the answer

mariarad [96]3 years ago

5 0

Answer:

land .......................

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On a cool, rainy day, the barometric pressure is 698 mmHg. Calculate the barometric pressure in centimeters of water (cmH2O). De

lesantik [10]

Answer:

Barometric pressure is 942.3 cm of column of water.

Explanation:

We can measure barometric pressure by measuring the height h of a column of fluid (this column of fluid exerts the same pressure as the column of air of which we are measuring pressure) using the following formula:

$P = \rho*g*h\\$

Where ρ is the density of the fluid used and g the acceleration of gravity.

Knowing that both the column of mercury (to match units, we know that 698 mmHg are the same as 69.8 cmHg) and the column of water are representing the same pressure, we can match expressions and find h for the column of water:

$\rho_{Hg} *g*h_{Hg} =\rho_{Water} *g*h_{Water}\\ \\h_{Water}=\frac{rho_{Hg} *g*h_{Hg}}{\rho_{Water} *g} = \frac{13.5g/mL *9.8m/s^{2} *69.8cm}{1g/mL *9.8m/s^{2}}=942.3 cmH_{2}O$

7 0

3 years ago

What is physical and chemical changes in your own word?

mina [271]

Physical is something you can see with your eyes Chemical is something you can not

3 0

3 years ago

Read 2 more answers

Do the necessary

Vika [28.1K]

Answer:

questions to correctly likhdo

its all confusion

8 0

3 years ago

For the skeletal chemical equation BF3(g) + NaH(s) → B2H6(g) + NaF(s) what is the coefficient of B2H6 in the balanced equation?

KonstantinChe [14]

Answer:

Coefficient in front of the $B_2H_6$ in the balanced equation - 1

Explanation:

The unbalanced Chemical equation is shown below as:-

$BF_3+NaH\rightarrow B_2H_6+NaF$

On the left hand side,

There are 1 boron atom and 3 fluorine atoms and 1 sodium and hydrogen atoms.

On the right hand side,

There are 2 boron atoms and 6 hydrogen atoms and 1 sodium and fluorine atoms.

Thus,

leftside, $BF_3$ must be multiplied by 2 to balance boron and right side, $NaF$ must be multiplied by 6 to balance fluorine. Left side, $NaH$ must be multiplied by 6 to balance sodium and hydrogen atoms.

Thus, the balanced reaction is:-

$2BF_3+6NaH\rightarrow B_2H_6+6NaF$

Coefficient in front of the $B_2H_6$ in the balanced equation - 1

6 0

3 years ago

Read 2 more answers

When 7.68 g of zinc react with hydrochloric acid, what volume of hydrogen gas will be collected at 20.00C and 740 mm Hg?

slavikrds [6]

Answer:

V ≈ 2.9 L H₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Chemistry - Reactions

Aqueous Solutions and states of matter
Reaction Prediction

Chemistry - Gas Laws

Combined Gas Law: PV = nRT

P is pressure
V is volume in liters
n is amount of moles of substance
R is a constant - 62.4 (L · mmHg)/(mol · K)
T is temperature in Kelvins

Temperature Conversion: K = °C + 273.15

Explanation:

Step 1: Define

Unbalanced RxN: Zn (s) + HCl (aq) → ZnCl₂ (aq) + H₂ (g)

Balanced RxN: Zn (s) + 2HCl (aq) → ZnCl₂ (aq) + H₂ (g)

Given: 7.68 g Zn, 20.00 °C, 740 mmHg

Step 2: Identify Conversions

Kelvin Conversion

Molar Mass of Zn - 65.39 g/mol

Step 3: Convert

Stoichiometry: $7.68 \ g \ Zn(\frac{1 \ mol \ Zn}{65.39 \ g \ Zn} )(\frac{1 \ mol \ H_2}{1 \ mol \ Zn} )$ = 0.117449 mol H₂

Temp Conversion: 20.00 + 273.15 = 293.15 K

Step 4: Find V

Substitute: (740 mmHg)V = (0.117449 mol)(62.4 (L · mmHg)/(mol · K))(293.15 K)
Multiply: (740 mmHg)V = 2148.45 L · mmHg
Isolate V: V = 2.9033 L H₂

Step 5: Check

We are given 2 sig figs as our lowest. Follow sig fig rules and round.

2.9033 L H₂ ≈ 2.9 L H₂

6 0

3 years ago