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patriot [66]
3 years ago
8

The ionic compounds NaClNaCl and MgSMgS are represented by the diagrams above. Which statement correctly identifies diagram 1 an

d identifies the compound with the lower melting point, explaining why?
Chemistry
1 answer:
Oksana_A [137]3 years ago
7 0

Answer:check explanation

Explanation:

No diagram is given above but to determine the value of melting point we need to understand the fact that NaCl has a lower melting point than MgS.

Reasons are; (1) sodium ion (+1) in the first group of the periodic table is characterized by its softness and low melting point and, (2). Is that it has a lower melting point than MgS because the COULUMBIC ATTRACTIONS between its singly charged sodium ions(+1) and the chlorine ions(-1) are weaker than those between the ions in MgS.

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3) The acronym m/s stands for?
algol13

Answer:

B-meters per second

Explanation:

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4 years ago
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Earth is approximately 1.5 x 10^8 km from the sun the. How far is earth from the sun meters
Zielflug [23.3K]

Answer:

{ \tt{1 \: km = 1000m}} \\ { \tt{1.5  \times {10}^{8} km =  (\frac{1.5 \times  {10}^{8} \times 1000 }{1} )m}} \\  = 1.5 \times  {10}^{11}  \: metres

4 0
3 years ago
Examine these two MSDS from different manufacturers for sodium hydroxide (NaOH). Compare and contrast the following aspects: che
SCORPION-xisa [38]

Answer:

In #1) Chemical Name: Sodium hydroxide, Chemical Formula: Na OH, Synonyms: Caustic soda, Sodium hydrate. General: Corrosive to metals and tissue. Noncombustible solid. Soluble in water. When in contact with water, may generate sufficient heat to ignite combustible materials.Health Hazard: Strong corrosive action on contacted skin. Causes eye and skin burns. Causes digestive and respiratory tract burns. Reactivity: Water, acids, flammable liquids, metals such as aluminum, tin, and zinc.Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider the material's impact on air quality, potential migration in soil or water, effects on animal and plant life, and conformance with environmental and public health regulations.  

#2) Product Name: Sodium hydroxide, pellets

Chemical Name: Sodium Hydroxide

Synonyms: Lye, Caustic soda, Soda lye

G H S-US

Signal Word: Danger

Hazard Statement: H 314 - Causes severe skin burns and eye damage

Precautionary Statements:

P 260 - Do not breathe mist, spray, or vapors.

P 264 - Wash exposed skin thoroughly after handling.

P 280 - Wear eye protection, face protection, protective clothing, and protective gloves.

P 301+P 330+P 331 - IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P 303+P 361+P 353 - IF ON SKIN: Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.

P 305+P 351+P 338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing

P 310 - Immediately call a poison center or doctor/physician.

P 363 - Wash contaminated clothing before reuse.

P 405 - Store locked up.

P 501 - Dispose of contents/container to comply with local, state, and federal regulations

IF INHALED: Remove person to fresh air and keep comfortable for breathing

Health Hazard: Causes severe burns to eyes, skin, and mucus membranes.

Target Organs: Eyes, skin, respiratory system

Hazard Summary: When dissolved in water or neutralized with acid, it liberates substantial heat, which may be sufficient to ignite combustible materials. Sodium hydroxide is very corrosive.

Waste Disposal: Waste must be disposed of in accordance with federal, state, and local environmental control regulations.

Explanation:

I just did this by stating what I observed then copy and pasted the info it asked for the only one I didn't get was order of compounds. Anyways hope this helps.

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4 years ago
Which composition of water moves to begin a deep water current
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Cold and high salinity. Hope this helps :)
4 0
3 years ago
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Consider the following half-reactions and their standard reduction potential values to answer the following questions.
Ganezh [65]

Answer:

Br2 (l) + 2e- ---------> 2Br- (aq) E° = 1.08 V cathode

Cu2+ (aq) + e- --------->Cu+ (aq) E° = 0.15 V anode

Explanation:

We have to first state the fact that the reaction having the most positive reduction potential occurs at the cathode in any spontaneous electrochemical cell. The half reaction with the less positive electrode potential usually occurs at the anode.

The overall reaction equation is;

2Cu2+ (aq) + Br2 (l) ----->2Cu+ (aq) + 2Br- (aq)

E°cell= E°cathode - E°anode

E°cathode= 1.08 V

E°anode= 0.15V

E°cell = 1.08-0.15 = 0.93 V

But

∆G°= -nFE°cell

n= 2, F=96500C, E°cell= 0.93V

∆G° = -(2× 96500× 0.93)

∆G= -179490 J

But;

∆G = -RTlnK

R=8.314 JK-1

T= 25+273= 298K

Kc= the unknown

∆G° = -179490 J

Substituting values and making lnK the subject of the formula

lnK= ∆G/-RT

lnK= -( -179490/8.314 × 298)

lnK= 72.45

K= e^72.45

K= 2.91×10^31

4 0
3 years ago
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