Which of the following is the
correct way to express
0.0000321 in scientific
notation?

Answer:

David R. Ashbaugh

Explanation:

David R. Ashbaugh is a Canadian police officer known for his extensive research on the friction ridge identification, introducing for the first time the use of the term ridgeology in forensic identification and the ACE-V methodology.

Answer:

At the top of the swing

Explanation:

Answer:

3:1 or 3/1

Explanation:

Look at the coefficients then set up ratio. Simplify to the base numbers and you get 3/1 or 3:1. Thus, for every 3 MgO you produce 1 Mg3N2

Answer: This is a link to all of the awsers

https://pshs.psd202.org/documents/ssafe/1552416190.pdf

Explanation:

Answer:

Explanation:

1) Vanadium (IV) → V⁺⁴

Carbonate → CO₃⁻²

So , Vanadium (IV) Carbonate = V₂(CO₃)₄  or V(CO₃)₂

2) Tin (II) = Sn⁺²

Nitrite = NO₂⁻

So, Tin (II) Nitrate = Sn(NO₂)₂

3) Cobalt (III) = Co⁺³

Oxide = O⁻²

So , Cobalt (III) Oxide = Co₂O₃

4) Titanium (II) = Tn⁺²

Acetate = CH₃COO⁻

So , Titanium (II) Acetate = Tn(CH₃COO)₂ or Tn(C₂H₃O₂)₂

5) Vanadium (V) = V⁺⁵

Sulfide = S⁻²

So , Vanadium (V) Sulfide = V₂S₅

6) Chromium (III) = Cr⁺³

Hydroxide = OH⁻

So , Chromium (III) Hydroxide = Cr(OH)₃

7) Lithium = Li⁺

Iodide = I⁻

So , Lithium Iodide = LiI

8) Lead (II) = Pb⁺²

Nitride = N⁻³

So , Lead (II) Nitride = Pb₃N₂

9) Silver = Ag⁺

Bromide = Br⁻

So , Silver Bromide = AgBr

Answer:

88%.

Explanation:

The percentage yield of lead sulfate in this experiment is 88% if 2.53 is divided by 2.85 and multiply by 100. The percentage yield can be calculated when the experimental yield is divided by theoretical yield and then multiply by 100. The percentage yield tells us about the actual yield that is gained in the end of experiment which is lower than theoretical yield.

Answer:gc

Explanation:

Answer:

The steps in order are;

1. Obtain a 50-mL volumetric flask

2. Add approximately 10 mL of deionized water to the empty flask

3. Use a pipet to add the appropriate volume of stock solution to the flask

4. Cap the flask and invert several times to mix

5. Fill the volumetric flask with deionized water until the meniscus touches the mark

6. Swirl the flask to mix the contents

The volume of the acetic acid to be added to the solution is 15 mL

Explanation:

The given steps are;

4. Cap the flask and invert several times to mix

5. Fill the volumetric flask with deionized water until the meniscus touches the mark

6. Swirl the flask to mix the contents

1. Obtain a 50-mL volumetric flask

3. Use a pipet to add the appropriate volume of stock solution to the flask

2. Add approximately 10 mL of deionized water to the empty flask

The given parameters are;

The volume of the volumetric flask = 50-mL

The concentration of the final solution of acetic acid = 0.6 mg/L

The concentration of the stock solution = 2.0 mg/L

Let 'x' represent the volume of the stock solution added, we have;

2.0 mg/L·x + (50 - x)×0 = 0.6 mg/L × 50-mL

x = 0.6 mg/L × 50-mL/(2.0 mg/L) = 15 mL

The volume of the stock solution to be added, x = 15 mL

Answer:

water

Explanation:

liquid don't have any shear strength and so a shear wave cannot propagate through a liquid.

The correct answer is:

C. Press the gas pedal while the car is running.

A driver can cause a car to accelerate by pressing the gas pedal.

What is Acceleration?

Acceleration is the rate at which an object's velocity changes over time. It is a vector quantity that includes both the magnitude (or speed) and direction of the change in velocity. In simpler terms, acceleration refers to the rate at which an object speeds up or slows down, or changes its direction of motion.

Acceleration is caused by forces acting on an object, such as a push or pull. In the case of a car, pressing the gas pedal causes the engine to generate more power and push the car forward, resulting in an increase in velocity and acceleration. Conversely, pressing the brake pedal causes the car to slow down and decelerate.

The gas pedal controls the amount of fuel and air that is delivered to the engine, which in turn determines how fast the engine runs and how much power it generates. Other factors that can affect a car's acceleration include the car's weight, the condition of its engine and transmission, the road surface and gradient, and the driver's skills and techniques.

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Answer:

The answer is 2 all you do is divide the 6.02 and 3.01 and you get 2

Answer:

D.

The substance will have the same chemical properties.

Explanation:

Physical changes do not alter the chemical composition of a substance, so the chemical properties will not change.

Answer:

12.56 moles

Explanation:

Answer:

high B or a low A:) Good Luck

Explanation:

Answer:

The trachea, commonly known as the windpipe, is a tube about 4 inches long and less than an inch in diameter in most people. The trachea begins just under the larynx (voice box) and runs down behind the breastbone (sternum).

Explanation:

Answer:

The answer is "3.57 and 0.07".

Explanation:

Using the slop formula:

[tex]=\frac{n_2-n_1}{n_2-n_1}\\\\ =\frac{0.714-0.357}{0.20-0.10} \\\\ = ABSORPTIVITY, \ \ a=3.57 \\\\A= a\times b \times c[/tex]

Given:

[tex]A=0.250[/tex]

length path [tex]b=1[/tex]  

from calibration it is found that

[tex]a=3.57\\\\consentation \ c=\frac{A}{a\times b} \\\\C=\frac{0.250}{3.57\times 1}[/tex]

   [tex]=0.07 \ M[/tex]

Answer:

Sodium chloride is ionically bonded. An electron has transferred from sodium to chlorine. Sodium has an electronegativity of 1.0, and chlorine has an electronegativity of 3.0.

...

The electronegativity difference between sodium and chlorine is 2.23 and the type of bond is ionic bond.

The tendency of an atom in a molecule to attract the shared pair of electrons towards itself is known as electronegativity.

Electronegativity is a kind of measure that tells how strongly atoms attract the bonding electrons to them.

Its symbol is a Greek letter that looks like an (X). It is directly proportional to the atom’s attraction for the electrons.

The compounds which form between the elements having a huge difference in the electronegativity are ionic compounds, and also have ionic bonding.

Electronegativity of Sodium = 0.93

Electronegativity of chlorine = 3.16

Difference = 2.23

The type of bond between them is ionic bond.

Therefore, The electronegativity difference between sodium and chlorine is 2.23 and the type of bond is ionic bond.

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Answer:

- there are homologous chromosomes in the middle of the cell (metaphase I)

- there are sister chromatids in the middle of the cell (metaphase II).

Explanation:

Answer:

Molarity of the solution = 0.08 M

Further explanation

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

0.5 lb=226,796 g

MW silver nitrat - AgNO₃ = 169,87 g/mol

mol AgNO₃ :

Molarity :

Answer:

B. They don't have enough energy to overcome the attractions between them.

Answer:They don't have enough energy to overcome the attractions

between them.

Explanation:

A. They have no motion and cannot even vibrate in place.

B. They don't have enough energy to overcome the attractions

between them.

C. They bounce off the walls of their container and back into place.

D. They move independently of one another.

Answer:

The wind pushes the sails from behind, causing the boat to move forward.

Answer:

Wind energy obtained by the machine is converted into kinetic energy as it functions and thus enabling the boat to move.

Together, the forces of drag, from the water, and the pressure from the wind against the sail itself push the craft forward. Angling too sharply into the wind causes the forces on the boat to become unbalanced, and moves the boat sideways in the water.

Answer:

D. the atomic mass increases from left to right

Explanation:

Answer:

Protein

Explanation:

Explanation:

Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate.Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.The ocean doesn't just store solar radiation; it also helps to distribute heat around the globe. When water molecules are heated, they exchange freely with the air in a process called evaporation. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds. In fact, almost all rain that falls on land starts off in the ocean. The tropics are particularly rainy because heat absorption, and thus ocean evaporation, is highest in this area.

V1 = 30 mL

P1 = 760 torr

P2 = 1520 torr

V2 = ?

applying Boyle's Law

P1*V1 = P2*V2

760 torr * 30 mL = 1520 torr * V2

V2 = 760 torr * 30 mL / 1520 torr

( C ) is correct

Answer:

Acidic oxides, or acid anhydride, are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetals or of metals in high oxidation states.

Explanation:

Answer:

the answer is C, B, and D

Explanation:

I took the test and got it right

Habitat loss and Soil erosion are environmental effects of farming and the correct options are option B and C.

Environmental changes are likely to affect agricultural production over the next  decades. The interactions between environmental change, agricultural yields and crop quality, and the critical pathways to future diets and health outcomes are largely undefined.

Agriculture contributes to a number larger of environmental issues that cause environmental degradation including: climate change, deforestation, biodiversity loss, dead zones, genetic engineering, irrigation problems, pollutants, soil degradation, and waste.

Therefore, Habitat loss and Soil erosion are environmental effects of farming and the correct options are option B and C.

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Answer:

V= 33.6L

Explanation:

The reaction between hydrogen and nitrogen is

3H2(g) + N2(g) + 2NH3(g)