Can someone please help me with 1,2,3 please

Answer:

Because water conducts electricity, so if an electrical current were to meet the water while you're in there taking a bath, you would essentially be surrounded by a huge conductor.

Answer:

c ) 29.4 psi

Explanation:

If the density of earth was twice than its actual density which is 5.51 g/mL, then at sea level the atmospheric pressure of earth in British units would be equal to 29.4 psi because increase of gravity, increase occurs in the atmospheric pressure.  If we double the gravity of earth by double of the earth density, so the weight of that same mass of air will be double which leads to the doubling of the atmospheric pressure at the sea level.

Answer: This is because of the different chemical composition of the types of detergents affects their cleansing actions.

Explanation:

Detergent means any substance which has the ability to clean an object. This includes soaps, soap powers and dish washing liquids as well as water. Detergents fall into two main types

--> Soapy detergents and

--> Soapless detergents

Soapy detergents are sodium salts of fatty acids. They are saponification products of fats and oils. In the chemical composition, each molecule of soap possesses a long hydrocarbon chain attached to an ionic head. The hydrocarbon tail is hydrophobic, so it is insoluble in water but soluble in oil and organic solvents. The ionic head is hydrophilic, so it is soluble in water. Due to this dual nature, when is dissolved in water, the soap molecule forms spherical clusters called MICELLES( hydrocarbon tails points inward and ionic heads point outward). Repulsion between the similarly charged ionic heads keeps the micelles apart. This property helps the soapy detergent to lift grease from grease coated fabrics when applied to it.

While the chemical properties of the Soapless detergents has a hydrophobic tail and a hydrophilic head. The hydrophobic tail is either a long chain hydrocarbon or a benzene ring with a long alkyl group attached. The hydrophilic head, unlike the Soapy detergents, can be positively or negatively charged or even neutral. These chemical properties makes it to have a more favourable and wider application than soapy detergent.it is suitable for washing acid - sensitive fabrics and for breaking up oil slicks.

Explanation:

molarity = no. of moles of solute/solution in litres

molarity =0.202/7.98

=0.025 M

Answer:

the tables below pull together numbers on the amount of sunshine that each US state usually has a year. there's information by state on the annual average dor percent, hours and days of sun

A map that includes the number of sunny days in South America would be used to study the total amount of sunlight the country receives.

A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes.

Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although most commonly used to depict geography, maps may represent any space, real or fictional, without regard to context or scale, such as in brain mapping, DNA mapping, or computer network topology mapping.

The space being mapped may be two dimensional, such as the surface of the earth, three dimensional, such as the interior of the earth, or even more abstract spaces of any dimension, such as arise in modeling phenomena having many independent variables.

Although the earliest maps known are of the heavens, geographic maps of territory have a very long tradition and exist from ancient times.

Learn more about map,here:

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Answer:

5.56 × 10^23 molecules

Explanation:

The number of molecules in a molecule can be calculated by multiplying the number of moles in that molecule by Avagadro's number (6.02 × 10^23)

Using mole = mass/molar mass

Molar mass of N2O4 = 14(2) + 16(4)

= 28 + 64

= 92g/mol

mole = 85.0/92

= 0.9239

= 0.924mol

number of molecules of N2O4 (nA) = 0.924 × 6.02 × 10^23

= 5.56 × 10^23 molecules

Answer:

N with a charge of (-3) is nitride

Explanation:

1 grams F2 to mol = 0.02632 mol

10 grams F2 to mol = 0.26318 mol

20 grams F2 to mol = 0.52636 mol

30 grams F2 to mol = 0.78954 mol

40 grams F2 to mol = 1.05272 mol

50 grams F2 to mol = 1.3159 mol

100 grams F2 to mol = 2.6318 mol

200 grams F2 to mol = 5.2636 mol

Answer:

True mark brainlest

Explanation:

Answer:

[tex]\boxed {\boxed {\sf 9.6 \ mol \ KCl}}[/tex]

Explanation:

We must use stoichiometry to solve this, which is the calculation of reactants and products in a reaction using ratios.

Let's analyze the reaction given.

[tex]MgCl_2 _{(aq)} + K_2SO_4 _{(aq)} \rightarrow 2KCl _{(aq)} + MgSO_4 _{(s)}[/tex]

Now, look at the coefficients, or numbers in front of the molecule formulas. If there isn't a coefficient, then a 1 is implied.

We want to find how many moles of potassium chloride (KCl) are produced from 4.8 moles of magnesium chloride (MgCl₂). Check the coefficients for these molecules.

The coefficient represents the number of moles. Therefore, 1 mole of magnesium chloride produces 2 moles of potassium chloride. We can set up a ratio using this information.

[tex]\frac { 1 \ mol \ MgCl_2} {2 \ mol \ KCl}[/tex]

Multiply by the given number of moles of magnesium chloride: 4.8

[tex]4.8 \ mol \ MgCl_2 *\frac { 1 \ mol \ MgCl_2} {2 \ mol \ KCl}[/tex]

Flip the ratio so the moles of magnesium chloride cancel out.

[tex]4.8 \ mol \ MgCl_2 *\frac {2 \ mol \ KCl} { 1 \ mol \ MgCl_2}[/tex]

[tex]4.8 *\frac {2 \ mol \ KCl} { 1 \ } }[/tex]

[tex]4.8 * {2 \ mol \ KCl}[/tex]

[tex]9.6 \ mol \ KCl[/tex]

9.6 moles of potassium chloride are produced from 4.8 moles of magnesium chloride.

Answer:

BECAUSE OF DENSITY

Explanation:

Answer:

It's DENSITY

Explanation:

YOURE WELCOME

Answer:

After 36 minutes, there will be a population of 800,000 bacteria.

Explanation:

After the first 18 minutes, it will double to 400,000. Then, at 36 minutes, it will have doubled again, giving you 800,000.

Answer:

second opinion is correct

Answer:

Since the iodine-iodine bond is a pure covalent bond, iodine is a non-polar molecule. The electronegativity difference between the two Iodine atoms is zero.

does this help???

Answer:

Option C

Explanation:

No. of Molecules=(Given Weight/Molar weight)*Avagadro No.

Given weight of H2O=3.01g

Molar weight of H2O=18g

On applying the formula, we get:

No. of Molecules=(3.01/18)*6.023*10²³=1.01*10²³

Answer:

Energía geotérmica (calor → energía eléctrica) Motores térmico, como el motor de combustión interna utilizado en automóviles o el motor de vapor (calor → energía mecánica) Energía térmica oceánica (calor → energía eléctrica) Represas hidroeléctricas (energía potencial gravitacional → energía eléctrica)

Explanation:

Answer:

One type of energy can change into another type of energy. Energy transformation means the changing of energy from one type to another, e.g. from kinetic energy to electrical energy, or from potential energy to kinetic energy.

Explanation:

Answer: D: sun

Explanation:

Answer: 15 grams of salt are there in 5 L of solution.

Explanation:

Concentration of a solution is defined as the number of grams of solute dissolved per liter of the solution.

Given : Concentration of solution : 3 g/L

1 Liter of solution contains = 3 gram of salt

Thus 5 L of solution contains = [tex]\frac{3g}{1L}\times 5L=15g[/tex]

Thus 15 grams of salt are there in 5 L of solution.

Mendeleev arranged the elements in the periodic table on the basis of atomic masses and stated the behavior of the elements in a periodic law. The periodic law is when elements arranged by the atomic masses they exhibit the presence of similar properties. Mendeleev focused on the chemical properties of the elements and Meyer focused on the physical properties of the elements. The change in the periodic table is that the elements are now arranged in the order of their atomic numbers instead of their atomic masses.

Answer:

B

Explanation:

Pressure is directly proportional to temperature

Answer:  0.548 mol

Explanation:

Explanation:

Solutions. 1. If 47 g of KCl dissolved in enough water to give 375 mL of soloution, what is the molarity ... vo volume of solute . ... v/v ethanol, how much 95% v/v ethanol ... prepare 200. mL ...

Answer:

The period number tells which is the highest energy level occupied by the electrons.

Explanation: