When a solid compound is formed from chemicals that are in solution, it is called aprecipitate
condensate
crystal

Answers

Answer 1

Answer:

Answer:

Precipitate

Explanation:

Related Questions

What is the volumetric flow rate in L/s of a stream of air (density = 1 kg/m3) at 1 kg/s?
How many molecules are shown in the chemical formula pictured? H3PO4A) 1B) 3C) 4D) 7
All the elements beyond uranium, the transuranium elements, have been prepared by bombardment and are not naturally occurring elements. The first transuranium element neptunium, NpNp, was prepared by bombarding U−238U−238 with neutrons to form a neptunium atom and a beta particle. Part A Complete the following equation: 10n+23892U→?+?01n+92238U→?+? Express your answer as a nuclear equation.
Describe the relationship between predator and prey in a balanced ecosystem. Please help I'll give brainliest.
What units of measurement would you use to measure height and mass

Ocean water is the coldest at

Answers

The bottom of the ocean because it does not get sun light

Consider the combination reaction of samarium metal and oxygen gas. If you start with 33.7 moles of samarium metal, how many moles of oxygen gas would be required to react completely with all of the samarium metal? For this reaction, samarium has a +3 oxidation state within the samarium/oxygen compound.

Answers

Answer:

25.275 moles of oxygen gas will be required to completely react with all the samarium metal.

Explanation:

$4Sm+3O_2\rightarrow 2Sm_2O_3$

Number of moles samarium metal = 33.7 moles

According to reaction, 4 moles of samarium reacts with 3 moles of oxygen gas.

Then 33.7 moles of samarium will react with:

$(3)/(4)* 33.7 mol=25.275 mol$ of oxygen gas.

25.275 moles of oxygen gas will be required to completely react with all the samarium metal.

Answer:

Moles of oxygen gas required to react completely with 33.7 moles of samarium metal is $\fbox{25.3 \text{ mol}}$ .

Explanation:

A chemical equation in which the number of atoms of each element is the same on the reactant and product side is called a balanced chemical equation.

The balanced chemical equation can be used to determine the stoichiometric ratio between the reactant and the product. The stoichiometric ratio thus enables us to calculate:

1. Amount of one reactant required to react completely with the other reactant.

2. Amount of the product that can be produced from the given amount of the reactant.

Step 1: Write the chemical equation for the reaction between samarium metal and oxygen gas.

The chemical formula for oxygen gas is $\text{O}_(2)$ .

Samarium has +3 oxidation state within the samarium/oxygen compound. So, the chemical formula of the samarium oxygen compound is $\text{Sm}_(2)\text{O}_(3)$ .

The chemical equation is as follows:

$\fbox{\text{Sm}+\text{O}_(2) \rightarrow \text{Sm}_(2)\text{O}_(3)\n\end{minipage}}$

Step 2: Balance the chemical equation for the reaction between oxygen and samarium metal.

The number of oxygen atoms in the product side is 3 and in the reactant side is 2. Put coefficient 2 in front of $\text{Sm}_(2)\text{O}_(3)$ and 3 in front of $\text{O}_(2)$ to balance the oxygen atoms.

$\fbox{\text{Sm}+3\text{O}_(2) \rightarrow 2 \text{Sm}_(2)\text{O}_(3)\n\end{minipage}}$

The number of samarium atoms in the product side is 4 and in the reactant side is 1. Put coefficient 4 in front of Sm in the reactant side.

$\fbox{\n4\text{Sm}+3\text{O}_(2) \rightarrow 2 \text{Sm}_(2)\text{O}_(3)\n\end{minipage}}$

Step 3: Determine the stoichiometric ratio between samarium and oxygen from the above balanced chemical equation.

According to the balanced chemical equation, we can see that the stoichiometric ratio between samarium and oxygen is 4:3.

Step 4: Use unitary method and calculate the moles of oxygen required to completely react with the given moles of samarium metal as follows:

$\text{moles of O}_(2) = \left( \text{moles of Sm} \right)\left( \frac{3 \text{ mol of O}_(2)}{4 \text{ mol of Sm}} \right)$ ...... (1)

Step 5: Substitute 33.7 mol for moles of Sm in equation (1).

$\text{Moles of O}_(2) = \left( \text{33.7 mol} \right) \left( \frac{3 \text{ mol of O}_(2)}{4 \text{ mol of Sm}} \right)\n\text{Moles of O}_(2)= 25.275 \text{ mol}\n\text{Moles of O}_(2)= 25.3 \text{ mol}$

Note:

Do not forgot to balance the reaction. The reaction must be balanced in order to calculate the amount (mol) of oxygen required to completely react with the given amount of samarium.

Learn more:

1. Balanced chemical equation brainly.com/question/1405182

2. Learn more about how to calculate moles of the base in given volume brainly.com/question/4283309

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Some basic concept of chemistry

Keywords: samarium, oxygen gas, samarium/oxygen compound, 33.7 moles, 25.3 mol, balanced equation, stoichiometric ratio, coefficient, balance, moles, completely react.

A car travels with a speed of 91.4 kilometers per hour (km/hr). Convert this speed to meters per second (m/s). Show your work.

Round your final answer to three significant figures.

Type your answer...

Answers

Answer:

25.3889 m/s

Explanation:

We can simply write 91.4km/hr as,

91.4km

1 hr

=91400m

60 s × 60 s

=91400m

3600 s

= 25.3889 m/s

The specific spatial arrangement of amino acid residues that are close to each other in the polypeptide chain is called______the structure of a protein.a. primary.
b. secondary.
c. tertiary.
d. quaternary .

Answers

The specific spatial arrangement of amino acid residues that are close to each other in the polypeptide chain is called the tertiarystructure of a protein.

What is Protein?

Protein structure is three dimensional in shape, where the atoms are arranged in amino acid chain. The chain is polypeptide containing many amino acid sequences.

The tertiary structure have a single polypeptide chain which is called the backbone.

Therefore, the specific spatial arrangement of amino acid residues that are close to each other in the polypeptide chain is called the tertiarystructure of a protein.

Learn more on protein structure here,

brainly.com/question/17338734

Answer:

c. tertiary.

Explanation:

In this case, we can review the definition of each level of structuration in the proteins:

Primary structure

In the primary structure, the amino acids are linked by peptide bonds. That is, the order of the amino acids is the criterion that defines this type of structure.

Secondary structure

In the secondary structure, we have to look at the way in which the protein is folded. The options are:

-) Beta-laminar: A structure in which the protein has a planar shape.

-) Alpha-helix: A structure in which the protein has a cross-strand form.

Tertiary structure

In the tertiary structure, the R groups that the amino acids have in the primary structure can generate interactions with each other. Interactions such as hydrogen bridges, dipole-dipole, hydrophobic interactions. This makes the protein have a very specific three-dimensional structure, on which its function depends.

Quaternary structure

In the quaternary structure, several subunits may be attached, or there may be prostatic groups (metals that can help to attach various protein units).

With all these in mind, the deffinition that fits with the description in the question is the tertiary structure.

I hope it helps!

The boiling point of an aqueous 1.83 m (nh4)2so4 (molar mass = 132.15 g/mol) solution is 102.5°c. determine the value of the van't hoff factor for this solute if the kb for water is 0.512°c/m. 2.7 1.8 2.3 3.0 3.6

Answers

The value of the van't Hoff factor for the given solute is 2.7

Option (A) 2.7 is correct.

What is van't Hoff factor?

The Van't Hoff factor is a measure of a solute's effect on colligative qualities such boiling point elevation, osmotic pressure, and relative vapor pressure reduction.

Given,

Molar mass is 132.15 g/mol

Boiling point elevation is 102.5 °C

kb for water is 0.512°c/m

Molarity of solution is 1.83 m

The value of van't Hoff factor is: 2.66 or 2.7 (approx)

Now, from the solution of colligative properties to calculate elevation in boiling point.

$\bold{\Delta Tb = ikbm}$

where Δ = elevation of boiling point (102.5)

$\bold{102.5* i* 0.512 * 1.83 }$

$\bold{i = 2.66 = 2.7 }$

Thus, The value is 2.7 option (A) is correct.

Learn more about van't Hoff factor, here:

brainly.com/question/22047232

We need to know the value of van't hoff factor.

The van't hoff factor is: 2.66 or 2.7 (approximately)

(NH₄)₂SO₄ is an ionic compound, so it dissociates in solution and produces 3 ionic species. Therefore van't hoff factor is more than one.

From the equation: Δ $T_(b)$ =i $K_(b)$ .m, where Δ $T_(b)$ = elevation of boiling point=102.5 - 100=2.5°C.

m=molality of solute=1.83 m (Given)

$K_(b)$ = Ebullioscopic constant or Boiling point elevation constant= 0.512°C/m (Given)

i= Van't Hoff factor

So, 2.5= i X 0.512 X 1.83

i= $(2.5)/(0.512 X 1.83)$

i=2.66= 2.7 (approx.)

What is a ‘control’ in an experiment?A. A version of the experiment that is unchanged to make sure the experimental data is not due to chance.
B. A person who oversees the experiment to make sure it is following proper procedures.
C. The variable controlled by the scientist to affect the dependent variable.
D. The name for the set of independent and dependent variables that will be controlled by the scientist.

need help asap got 1 minute

Answers

The statement, that describes the ‘control’in an experiment is "the name for the set of independent and dependent variables that will be controlled by the scientist."

What is a control in experiment?

A control is an element in an experiment that remains intact or unaffected by other variables. An experiment or observation aiming to minimise the influence of variables other than the independent variable is referred to as a scientific control. It serves as a standard or point of reference against which other test findings are measured.

In a scientific experiment, an independent variable is the variable that is modified or manipulated in order to assess the effects on the dependent variable. In a scientific experiment, the dependent variable is the variable that is being tested and measured. The designation given to the set of independent and dependent variables that the scientist will regulate.

Hence the correct option is D.

Learn more about controlin an experiment here

https://brainly.in/question/19374703

#SJP3

D. The name for the set of independent and dependent variables that will be controlled by the scientist.

Other Questions

Classify each of the following chemical reactions as a synthesis decomposition and single displacement or double displacement reaction

Classify these bonds as ionic, polar covalent, or nonpolar covalent p cl k br c c

The molecule XeF2 does not obey the octet rule. Draw its Lewis structure and state the type of octet-rule exception. Include lone pair electrons in the Lewis structure.

Aqueous solutions of barium chloride and silver nitrate are mixed to form solid silver chloride and aqueous barium nitrate. The complete ionic equation contains which of the following species (when balanced in standard form)? A. NO (aq) B. 2Ba (aq) C. 2Ag (aq) D. CI(aq)