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MatroZZZ [7]
3 years ago
9

If two or more elements are involved in a chemical reaction they will most likely form a?

Physics
2 answers:
Vitek1552 [10]3 years ago
5 0
I know either mixture or compound

seraphim [82]3 years ago
4 0

Answer:

The answer is compound

Explanation:

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5g of ammonium nitrate was dissolved in 60g of water in an insulated container. The temperature at the start of the reaction was
Minchanka [31]

Answer: The energy absorbed by the reaction from the water is 996 Joules.

Explanation:

Energy absorbed by the reaction or energy lost by the water to the reaction,Q.

Mass of the the reaction  ,m = 60 g

Specific heat of water = c = 4.15 J\g ^oC

Change is temperature=\Delta T=19^oC-23^oC=-4^oC

Q=mc\Delta T=60 g\times 4.15 J\g ^oC\times (-4^oC)=-996 Joules

Negative sigh indicates that energy was given by the water to the reaction.

The energy absorbed by the reaction from the water is 996 Joules.

5 0
3 years ago
20.0 moles, 1840 g, of a nonvolatile solute, C 3H 8O 3 is added to a flask with an unknown amount of water and stirred. The solu
Anastasy [175]

Answer:

0.144 kg of water

Explanation:

From Raoult's law,

Mole fraction of solvent = vapor pressure of solution ÷ vapor pressure of solvent = 423 mmHg ÷ 528.8 mmHg = 0.8

Let the moles of solvent (water) be y

Moles of solute (C3H8O3) = 2 mole

Total moles of solution = moles of solvent + moles of solute = (y + 2) mol

Mole fraction of solvent = moles of solvent/total moles of solution

0.8 = y/(y + 2)

y = 0.8(y + 2)

y = 0.8y + 1.6

y - 0.8y = 1.6

0.2y = 1.6

y = 1.6/0.2 = 8

Moles of solvent (water) = 8 mol

Mass of water = moles of water × MW = 8 mol × 18 g/mol = 144 g = 144/1000 = 0.144 kg

7 0
3 years ago
An Olympian swims at a rate of 10.8 Km/h. How far will he travel after 0.3 hours?
zalisa [80]

Answer:

C. 3.2km

Explanation:

Seeing as the swimmer travels 10.8 km in an hour, and they are asking you to find how far they have traveled after 0.3 hours, multiply 10.8 km/h by 0.3 h. The h's will cancel and you are left with 3.24km, which can be rounded to 3.2km. Hope this helps! :)

6 0
3 years ago
¿Porque los sensores son importantes en nuestra vida diaria?
7nadin3 [17]
En la medicina y la biotecnología, los sensores son herramientas que detectan procesos biológicos, químicos, o físicos y luego transmiten o reportan esta información. Algunos sensores trabajan fuera del cuerpo, mientras que otros están diseñados para ser implantados dentro del cuerpo.

Algunos dispositivos de monitoreo constan de múltiples sensores que miden una serie de parámetros físicos o biológicos. Otros dispositivos pueden ser multifuncionales, incorporando sensores y luego suministrando un fármaco o intervención en base a la información obtenida de los sensores. Los sensores pueden ser también componentes en sistemas que procesan muestras clínicas, tales como los dispositivos cada vez más comunes conocidos como “lab-on-a-chip”.

Los sensores ayudan a los proveedores del cuidado de la salud y a los pacientes a monitorear las condiciones de la salud y asegurar que puedan tomar decisiones informadas sobre el tratamiento. Los sensores también se utilizan a menudo para monitorear la seguridad de los medicamentos, los alimentos, las condiciones ambientales, y otras sustancias que podríamos encontrar.
8 0
3 years ago
During a race, a runner runs with an average velocity of 4.26 m/s toward city hall. What is the runner’s displacement after 167s
Artyom0805 [142]

Answer:

d = 711.42 m

Explanation:

Given that,

The average velocity of a runner, v = 4.26 m/s

Time, t = 167 s

We need to find the runner's displacement.

The average velocity of an object is equal to the displacement per unit time. It can be given by :

v=\dfrac{d}{t}\\\\d=vt\\\\d=4.26\ m/s\times 167\ s\\\\d=711.42\ m

So, the runner's displacement is 711.42 m.

3 0
2 years ago
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