Please help me it’s my birthday

Answer:I dont know about this one

Explanation:

The given question is incomplete. The complete question is:

When 136 g of glycine are dissolved in 950 g of a certain mystery liquid X, the freezing point of the solution is 8.2C lower than the freezing point of pure X. On the other hand, when 136 g of sodium chloride are dissolved in the same mass of X, the freezing point of the solution is 20.0C lower than the freezing point of pure X. Calculate the van't Hoff factor for sodium chloride in X.

Answer: The vant hoff factor for sodium chloride in X is 1.9

Explanation:

Depression in freezing point is given by:

[tex]\Delta T_f=i\times K_f\times m[/tex]

[tex]\Delta T_f=T_f^0-T_f=8.2^0C[/tex] = Depression in freezing point

[tex]K_f[/tex] = freezing point constant

i = vant hoff factor = 1 ( for non electrolyte)

m= molality =[tex]\frac{136g\times 1000}{950g\times 75.07g/mol}=1.9[/tex]

[tex]8.2^0C=1\times K_f\times 1.9[/tex]

[tex]K_f=4.32^0C/m[/tex]

Now Depression in freezing point for sodium chloride is given by:

[tex]\Delta T_f=i\times K_f\times m[/tex]

[tex]\Delta T_f=20.0^0C[/tex] = Depression in freezing point

[tex]K_f[/tex] = freezing point constant  

m= molality = [tex]\frac{136g\times 1000}{950g\times 58.5g/mol}=2.45[/tex]

[tex]20.0^0C=i\times 4.32^0C\times 2.45[/tex]

[tex]i=1.9[/tex]

Thus vant hoff factor for sodium chloride in X is 1.9

Answer:Concentration of products can vary.

As more solute dissolves, more ions form; but the volume in which they are contained does not change.

Concentration of the solid phase does not change.

Explanation:

Answer:

From solutions that evaporate

From hot water solutions when the solution cools

Explanation:

The substances that can form minerals can be dissolved in the water to form a solution. Solution can be described as as a mixture in which a solute is dissolved in a solvent. When a particular dissolved solute evaporates from the solution, crystals of minerals might form. The mineral halite was formed when seas evaporated over a period of time.

The minerals can also be formed when a hot water solution gets cooled.

Answer:

100

Explanation:

Answer:

[tex]m_{CO_2}=1.27gCO_2[/tex]

Explanation:

Hello!

In this case, since the combustion of butane is shown below:

[tex]C_4H_{10}+\frac{13}{2} O_2\rightarrow 4CO_2+5H_2O[/tex]

We can evidence the 1:4 and 13/2:4 mole ratio of butane to carbon dioxide and oxygen to carbon dioxide respectively. Thus, in order to compute the maximum amount of carbon dioxide produced in this reaction, we set up the following stoichiometric work:

[tex]m_{CO_2}^{by\ C_4H_{10}}=4.00gC_4H_{10}*\frac{1molC_4H_{10}}{58.12gC_4H_{10}}*\frac{4molCO_2}{1molC_4H_{10}}*\frac{44.01gCO_2}{1molCO_2}=12.11gCO_2\\\\ m_{CO_2}^{by\ O_2}=1.50gO_2*\frac{1molO_2}{32gO_2}*\frac{4molCO_2}{13/2molO_2}*\frac{44.01gCO_2}{1molCO_2}=1.27gCO_2[/tex]

Thus, since oxygen yields the fewest amount of carbon dioxide, we infer the former is the limiting reactant and therefore the maximum amount of carbon dioxide product is 1.27 g.

Best regards!

Answer:

less

Explanation:

the more heat it has, the less a given heat will affect it

Answer:

more heat

Explanation:

Answer:

The metals are on the bottom left in the periodic table, and the nonmetals are at the top right. The semimetals lie along a diagonal line separating the metals and nonmetals. The elements are arranged in a periodic table, which is probably the single most important learning aid in chemistry.

Explanation:

im not sure if there was supposed to options to that question or not

Answer:

Charles Darwin

Explanation:

Charles Darwin is more famous than his contemporary Alfred Russel Wallace who also developed the theory of evolution by natural selection. scientist who studies living organisms.J

Answer:

Charles Darwin

Explanation:

He was the one who created the theory of evolution by natural selection along with the co-discoverer Alfred Wallace in 1858.

I just did this topic like a few weeks ago.

Answer:

hydrated ferric oxide is ferric hydoxide sol and is positively charged. When aqueous solution of NaCl is added to it,the Cl- ions neutralise the positive charge on the sol particles. In the absence of charge, brown precipitate is formes due to colloids can be coagulation of particles.Nov 11, 2020

Explanation: hope this help

Answer:

Li + HCl = LiCl + H2 - Chemical Equation Balancer.

Explanation:

Answer:

A Bose-Einstein condensate or BEC in simple words is a group of atoms cooled near absolute zero.

Answer:

a. NH3

b.

c. NaCl

d.

e. HCl

f.

Answer:

your answer is C

Explanation:

because when u make P1 the subject formula then P2 V2 will be divided with V1

Answer:

resources that you can use more than 1 time like rechargeable battery or solar energy

Explanation:

Answer:

Wet climates obviously have more water than driers climates. Metals, when subject to water have the tendency to oxidize rust. Therefore, if water is barely present in a climate, then oxidation is also least likely to occur.

Explanation:

Learnt it from reading a book

Answer:

An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.

Answer:

Hi! An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.

If this helped drop a brainley plz ;)

Explanation:

Answer:  B) KCl

Explanation: Potassium chloride, KCl , is an ionic compound formed by the electrostatic force of attraction that holds the potassium cations and the chlorine anions together. Potassium, K , is located in group 1 of the Periodic Table.

Answer:

C

Explanation:

Answer:

c

Explanation:

I think it is c because the tep. will change and the volume will change.

Answer:

The volume is decreasing at a rate of 30 cm³/min.

Explanation:

From the question given above, pressure (P) and volume (V) are related by the following equation

PV = C

C => constant

If we make P the subject of the above, we shall have:

P = C/V

From the equation above (i.e P = C/V),

We can say that P is inversely proportional to V. This implies that as P is increasing, V will be decreasing and also, as P is decreasing, V will be increasing.

Considering the question given above, the pressure (P) is increasing at a rate of 30 kPa/min. Therefore, the volume will be decreasing at a rate of 30 cm³/min.

Answer:

Three ways that I would make most of this situation are going near an area to avoid the things drifting into space. I would seek shelter in a basement. I would also stay indoors.

Earth's atmosphere and its oceans, rivers, and lakes would be one of the first things to drift away into space, we would need to avoid those obstacles by seeking shelter. The first problem is that Earth is rotating at high speed, rather like the way a weight on a string rotates if you spin it around your head. Anyone unfortunate enough to be outside at the time would quickly be lost. People inside buildings would be safer because most buildings are so firmly rooted to the ground that they would stay put even without gravity – at least for a while.

Gravity is the universal force that attracts matter. If there is less gravity, then the objects on the Earth will become weightless.

Gravity or the gravitational force is the fundamental force present in the universe that keeps the matter attracted to each other. It plays a major role in the rotation of the earth around the sun and keeps the atmosphere of the planet balanced.

In case of no gravity, the objects will become weightless and will start to float, and Earth will stop rotating and will collide with the sun. Also, the moon will collide with the earth and the objects will perish in the universe.

Learn more about gravity there:

https://brainly.com/question/12054584

#SPJ2

Answer:

[tex]\Large \boxed{\sf 0.714 \ moles}[/tex]

Explanation:

Avogadro's number can be used as a conversion factor from atoms to moles or moles to atoms.

[tex]\displaystyle \frac{4.3 \times 10^{23}}{6.022 \times 10^{23} } =0.714048[/tex]

Answer:

the second one filter for dissolved

Explanation:

Answer:

They filter the water for dissolved oxygen.

Explanation:

just took test

Answer:

The number of protons determines an element's atomic number and is used to distinguish one element from another. The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.

Answer: potential energy is stored

Explanation:

Answer:

Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons.

Your welcome