the melting point of sodium fluoride naf is 993 c
1. the melting point of sodium fluoride naf is 993 c
Answer:
NaF-iconic:NH3-covalent
Explanation:
diko po sure
2. Methane(CH⁴, melts at - 182 degree Celsius, where as Sodium Fluoride melts at 993 degree Celsius. Both are poor conductors of electricity and heat. However, methane is highly volatile while Sodium Fluoride(NaF², has low volatility. Which between the two is a covalent compound?a. Methane b. Sodium c. Fluorine d. Sodium Fluoride
Answer:
A. methane
Explanation:
It is methane because the bond is formed by sharing of electron between non-metals and covalent bonds have low volatility.
And solid, gas, and liquid exists in covalent bonds while crystalline solid exists only in Ionic bonds
3. 7. Which of the following materials has low melting and boiling points?A. Calcium oxide (Cao)C. Sodium chloride (NaCl)B. Methane (CH4)D. Sodium Fluoride (NaF)
Answer:
7. C
Explanation:
That's my answer ^-^
#CarryOnLearning
4. what is the percentage composition of sodium fluoride
Answer:
Technical grades are 90% and 95% NaF ,light(37 cu in /lb) and dense (23 cu in/lb ,98%. The impurities are mainly sodium and aluminum fluosilicates
Explanation:
correct me if I'm wrong
5. The melting point of Sodium Fluoride (NaF) is 993˚C, while the Ammonia (NH3) has -78˚C. Which of the following is the correct statement in determining these compounds?
Answer:
Given: The melting point of Sodium Fluoride (NaF) is 993°C, while the Ammonia (NH3) is -8°C. Which of the following is the correct statement in determining these compounds?
ANSWER ⇒ B. NaF-ionic; NH3-covalent → Sodium Fluoride is an inorganic ionic compound. When this compound is dissolved in water, it will separate in two ions. While the ammonia, this compound is covalent. In chemistry, A covalent compound is formed chemically by a covalent bond, a kind of bonding that involves the sharing of electron pairs between atoms. You can also check it here: brainly.ph/question/8867777
2. The boiling point of Ethanol (C2H5OH) is 78°C, while the Sodium Chloride (NaCl) has 1420C. Which of the following is the correct statement in determining these compounds?
ANSWER ⇒ D. Both are covalent → Both compound are covalent. Since they are formed chemically by a covalent bond, a kind of bonding that involves the sharing of electron pairs between atoms.
3. A liquid substance "X" is poured and wet a piece of cloth in a room with a normal temperature. After leaving the cloth for a little amount of time, the cloth is dry. The substance may be determined as a/an ?
ANSWER ⇒ B. Covalent compound → Since the room is at normal temperature and only needs a little amount of time to be dried. This is due to low enthalpy of vaporization of a covalent compound. In thermodynamics ,enthalpy of vaporization is the energy required to break the intermolecular forces that the liquid "X" have.
Explanation:
6. 1. The melting point of Sodium Fluoride (NaF) is 993°C, while the Ammonia (NH) hasseparate sheet of paper.compounds?A. NaF - covalent: NH3-ionicB. NaFionic; NH3 - covalentC. both are ionicD. both are covalent
1. The melting point of Sodium Fluoride (NaF) is 993°C, while the Ammonia (NH) has separate sheet of paper compounds?
A. NaF - covalent: NH3-ionic
B. Naf ionic; NH3 - covalent
C. both are ionic
D. both are covalent
===================================================================
ANSWER:
Letter B. Naf ionic; NH3 - covalent is the correct answer.
===================================================================
#CarryOnLearning
#BrainliestBunch
#LearningIsFun
==BRAINLY12507==
7. Sodium fluoride maybe added to naphthyl asd (nasda) esterase reaction. the fluoride is added to inhibit a positive reaction with
Answer:
ha? anong gagawing ko jan :((((((
8. indicate the uses of the following:lithium fluoridelithium chloride lithium bromidesodium fluoeidepotassuem fluoride
Answer:
Lithium fluoride
is most widely used as a flux in the production of ceramics, such as enamels, glasses and glazes. Similarly it is also used in brazing and welding fluxes and molten salt chemistry in metallurgy.
It is also used for:
• X-Ray monochromator plates as an analysis crystal
•Heat sink materials
•UV transmission windows
azom.com
-Continuation in comments
9. What is the purpose of adding sodium fluoride to the liquid blood sample
Explanation:
Sodium fluoride has been extensively used in the past as a preservative for glucose in blood samples. Sodium fluoride does prevent glycolysis, but it is known to interfere with certain enzyme reactions, such as urease.
10. Sodium fluoride may be added to the naphthyl ad acetate (nasda) esterase reaction. the fluoride is added to inhibit a positive reaction with:
Answer:
thanks po sa points at sry Po talaga lods
11. I. Give the melting point of the following. Then, identify what type of chemical compound is described in each number. Compound Melting Point Type of Chemical compound 1.Sodium Chloride 2.Methane 3. Aluminum Oxide 4. Magnesium Chloride 5. Sodium Fluoride
Answer:
primarily used as a fuel to make heat and lights .
Explanation:
also use to manufacture organic chemicals
12. why is Sodium Fluoride important?
Sodium Fluoride is a naturally occurring mineral that serves to protect teeth from dental caries. It is scientifically proven that the correct amount of fluoride in water and use of fluoride-containing toothpastes and mouth rinses have a significant benefit on oral health and help to reduce tooth decay.
13. 8. Sodium Chloride is a combination of sodium and ______?A. CarbonB. ChlorineC. FluorideD. Iodine
Answer:
B.chlorine
Explanation:
,,,,,,,basta tama yan
Answer:
b.
Explanation:
yan po ang answer ko thank you
14. how many grams are in 4.5 moles of sodium fluoride?
Answer:
189g Grams
Explanation:
15. what is the electronegativity value of sodium fluoride
Answer:
The most used definition of electronegativity is that an element's electronegativity is the power of an atom when in a molecule to attract electron density to itself. The electronegativity depends upon a number of factors and in particuler as the other atoms in the molecule. The first scale of electronegativity was developed by Linus Pauling and on his scale sodium has a value of 0.93 on a scale running from from about 0.7 (an estimate for francium) to 2.20 (for hydrogen) to 3.98 (fluorine). Electronegativity has no units but "Pauling units" are often used when indicating values mapped on to the Pauling scale.
Use the links in the "Electronegativity" column of the table below for definitions, literature sources, and visual representations in several different styles (examples of which are shown below).
Types of electronegativity for sodium. All values are quoted on the Pauling scale.
Electronegativity Value in Pauling units Periodicity link
Pauling electronegativity 0.93
Sanderson electronegativity 0.56
Allred Rochow electronegativity 1.01
Mulliken-Jaffe electronegativity 0.91 (s orbital)
Allen electronegativity 0.869
Answer:
The first scale of electronegativity was developed by Linus Pauling and on his scale sodium has a value of 0.93 on a scale running from from about 0.7 (an estimate for francium) to 2.20 (for hydrogen) to 3.98 (fluorine).
Explanation:
hope it helps
16. If you us 5.76mol of sodium fluoride (NaF) and dissolve this into 3.62kg of watwr, what will be the change in the boiling point of your solution.
[tex]\tt{\huge{\red{Solution:}}}[/tex]
Step 1: Calculate the molality of the solution.
[tex]\begin{aligned} m & = \frac{\text{moles of solute}}{\text{mass of solvent}} \\ & = \frac{\text{5.76 mol}}{\text{3.62 kg}} \\ & = \text{1.5912 mol/kg} \\ & = 1.5912 \: m \end{aligned}[/tex]
Step 2: Determine the van't Hoff factor.
Since NaF is a strong electrolyte, it will dissociate completely into one Na⁺ and one F⁻ ions. Then, the van't Hoff factor is
i = 2
Step 3: Calculate the boiling-point elevation.
Note that Kb for water is 0.52°C/m.
[tex]\begin{aligned} \Delta T_{\text{b}} & = iK_{\text{b}}m \\ & = (2)(0.52^{\circ}\text{C/}m)(1.5912 \: m) \\ & = \boxed{1.7^{\circ}\text{C}} \end{aligned}[/tex]
Hence, the change in boiling point of the solution is 1.7°C.
[tex]\\[/tex]
#CarryOnLearning
17. 9-10 - Identify the compound as ionic or covalent 9. Sample A has a boiling point of 1,049°C, whereas sample B boils at 78°C. In addition, sample A is soluble in water whereas sample B is soluble in organic solvents Which between the two is an ionic compound? 10. Methane melts at -182°C, whereas Sodium Fluoride melts at 993°C. Both are poor conductors of electricity and heat However, methane is highly volatile while Sodium Fluoride has low volatility. Which between the two is a covalent compound?
Answer:
5.000 ✓ tama to p brinlest
Explanation:
lamat sa po
18. What is the purpose of adding sodium fluoride to the liquid blood sample
Answer:
Evidently sodium fluoride takes effect slowly but effectively in preserving glucose in blood for at least three days. Its use, however, is unnecessary if the concentration of glucose is to be measured within the first hour after sampling.
19. A pure sample of sodium fluoride contains 65g of sodium.How many grams of fluoride are present in this sample?
Answer:
Sodium fluoride (NaF) is an inorganic compound with the formula NaF. It is used in trace amounts in the fluoridation of drinking water, toothpaste, in metallurgy, as a flux, and is also used in pesticides and rat poison. It is a colorless or white solid that is readily soluble in water. It is a common source of fluoride in the production of pharmaceuticals and is used to prevent dental cavities.
20. what is the uses of sodium fluoride
Answer:
Sodium fluoride (NaF) is an inorganic compound with the formula NaF. It is used in trace amounts in the fluoridation of drinking water, in toothpaste, in metallurgy, and as a flux, and is also used in pesticides and rat poison.
Explanation:
#hopeitshelp✏️
21. does sodium fluoride Polar or non Polar??
[tex]\tt{\huge{\blue{Question:}}}[/tex]
Is sodium fluoride polar or non-polar?
[tex]\tt{\huge{\red{Answer:}}}[/tex]
Sodium fluoride (NaF) is neither polar nor polar. It is an ionic compound.
[tex]\\[/tex]
Explanation:
Covalent compounds are classified into two types: polar and non-polar. Since NaF is an ionic compound, it is neither polar nor non-polar.
[tex]\\[/tex]
#CarryOnLearning
22. TRUE or FALSE sodium,chlorine and sodium chloride have melting and boiling points
Answer:
ANSWER >> TRUE Beacuse sodium,chlorine and sodium chloride have melting and boiling points
Explanation:
DON'T FORGET TO SMILE ❤
✍STEREO SQUAD
✍ANONYMOUS SQUAD
#CARRY ON LEARNINGAnswer:
true po yan
Explanation:
kac nasagutan ko na po yan dti
23. how many mg of sodium fluoride are needed to prepare 100mL of a sodium fluoride stock solution such that a solution containing 2ppm of sodium fluoride results when 0.5mL is diluted to 250mL with water
Answer:
calculate nyo nalang po
24. how many grams are in 4.5 moles of sodium fluoride, NaF?
there are 189 grams in 4.5 moles of NaF
25. Lewis structure of sodium fluoride (NaF)
Answer:
Formula and structure: The chemical formula of sodium fluoride is NaF and its molar mass is 41.99 g/mol. It is a simple ionic compound, made of the sodium (Na+) cation and fluoride (F-) anion.
Explanation:
26. A 105-g sample of tap water is found to contain 0.08 g of sodium fluoride. What is the concentration of sodium fluoride in parts per million?
Answer:
In order to calculate the parts per million you will need to know how many mg of solute is dissolved in 1000g (1L) of water.
0.001
g
1000
g
= 0.000001
Multiplying 0.000001 by 1,000,000 gives a result of 1ppm.
Here is a video discussing this type of calculation. In the video, the number of moles of barium present in a 1L sample of water with a barium concentration of 2ppm is calculated.
Explanation:
pa brainliest po thank you hope it's help
27. What element is the cation in sodium fluoride? Select one: a. sodium b. fluoride c. both of the choices d. none of the choices
Answer:
The answer is letter B
Explanation:
I hope i helped you today!
28. The melting point of Sodium Fluoride (NaF) is 993°C, while the Ammonia (NH3) has-8°C. Which of the following is the correct statement in determining theseompounds?A. NaF- covalent; NH3-ionicC. both are ionicB. NaF-ionic; NH3- covalentD. both are covalentThe boiling point of Ethanol (C2H5OH) is 78°C, while the Sodium Chloride (NaCl)thano
Sodium Fluoride, Ammonia, Ionic or Covalent?
Given: The melting point of Sodium Fluoride (NaF) is 993°C, while the Ammonia (NH3) is -8°C. Which of the following is the correct statement in determining these compounds?
A. NaF- covalent; NH3-ionic
B. NaF-ionic; NH3- covalent → ANSWER
C. both are ionic
D. both are covalent
⇒ Sodium Flouride is inorganic ionic compound. When this compound is dissolved in water, it will separate in two ions, which are [tex]Na^{+}[/tex] and [tex]F^{-}[/tex].
An ionic compound is any chemical compound that is composed of ions held together by electrostatic forces called the ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions. In this example, Sodium or Na is the cation and Fluorine or F is the anion. For the ammonia, this compound is covalent. In chemistry, A covalent compound is formed chemically by a covalent bond, a kind of bonding that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs. Ammonia is a covalent compound because of the electronegativity difference between the two elements forming the compound, the hydrogen and the nitrogen atom. A Nitrogen atom and three Hydrogen will share electrons with each other to form a single covalent bond -- the NH3 compound.
#BRAINLYEVERYDAY
29. the melting point of sodium fllouride NaF is 993
Why does NaF have a melting point of 993 C?
= This is because the ionic bond formed between Na and F is more strong than the one formed between Rb and Br. The difference in bond strengths depends on various factors: The electronegativity of fluorine is ver high (highest). The size of Na and F ions is small in compared to those of Rb and Br.
Pa-brainliest. Thank you.
30. What is the overall charge on the compound, sodium fluoride? Explain.
Answer:
This results in an overall stable atom. If we were to identify the individual charges of said atoms, Na would have ... Sodium fluoride is conceived to be composed of equal ...
Explanation:
Sodium fluoride is conceived to be composed of equal numbers of
N
a
+
and
F
−
ions that are electrostatically bonded together in an extended, non-molecular array. And therefore sodium fluoride is neutral.
