Convert 75k to oC
(I’ll mark you as brainlister)

Answer:

At the completion of reaction.

Explanation:

The time when the reaction take places is the most significant time for measuring temperature of the solution because on this time the temperature will decrease or increase. Some reactions releases heat energy upon completion we called them exothermic reactions whereas some absorb heat energy from the surrounding, decreases the temperature which is known as endothermic reaction so measuring temperature at the completion of reaction is the correct time.

Answer:

A

Explanation:

kinetic energy of a body at rest = 0

Answer: don’t listen to him the answer is January 9

Explanation: jus took the test

When a outside force acts upon it.

Answer:

The melting and boiling points of molecular compounds are generally quite low compared to those of ionic compounds. This is because the energy required to disrupt the intermolecular forces between molecules is far less than the energy required to break the ionic bonds in a crystalline ionic compound (Figure 6.2. 1) .

Explanation:

hopefully this helps :)

if not then here. (Most of the time, the melting points of ionic compounds are very high compared to the melting points of molecular compounds.)

Answer: A. Molecular compounds tend to have lower melting points

Explanation:

Answer:

1.09 mL

Explanation:

Density is a measure of a substance's mass over its volume.

d = m/v

We can rearrange the equation to solve for volume, using algebra.

v = d/m

Therefore v = 6.35/5.80 = 1.09 mL

Answer:

i think option no. " D " = " metals, non-metals, metalloids " is the correct answer.

hope this answer will help u.

have a great time

Answer:

5000 cm

Explanation:

100 cm = 1m

100 x 50 = 1 x 50

5000 cms = 50 meters

Answer:

10.0 g of AgI will produce 5.28 g of Ag₂S

Explanation:

The balanced equation of the reaction is given below:

2AgI + Na₂S ----> Ag₂S + 2NaI

From the equation of reaction, 2 moles of AgI produces 1 mole of Ag₂S

The moles of a substance is related to its mass by a quantity known as molar mass which is defined as the mass of one mole of that substance.

Molar mass of AgI = (108 + 127) g = 235 g

Molar mass of Ag₂S = (108 × 2 + 32) g= 248 g

Mass of 2 moles of AgI = 2 × 235 g = 470 g

470 g of AgI produces 248 g of Ag₂S

10 g of AgI will produce 248 /470 × 10 g of Ag₂S = 5.28 g

Therefore, mass of Ag₂S produced = 5.28 g

Answer:

a different acid and base

Explanation:

Answer:

Q = 0.768 calorie

Explanation:

Given that,

Mass of water, m = 18.2g

The temperature changes from 25.2°C to 67.4 °C.

The specific heat of water, c = 4.184 J/g °C

We need to find the heat needed to change in temperature. The formula is given by :

[tex]Q=mc\Delta T\\\\Q=18.2\times 4.184\times (67.4-25.2)\\\\Q=3213.47\ J[/tex]

We know that, 1 calorie = 4184 J

or

1 J = (1/4184) calories

t means,

[tex]3213.47\ J=\dfrac{3213.47}{4184}\ J\\\\=0.768\ calorie[/tex]

So, the required heat needed is 0.768 cal.

So, 0.768 calorie of heat is needed.

Answer:

They would be pushed out and lose their homes

Explanation:

A wildfire destroys most of the plant life in a forest. Animals would be pushed out and lose their homes.

An unplanned, uncontrolled, and unpredictable fire inside an area of flammable vegetation is known by several names, including wildfire, bushfire, bushfire, wildland fire, and rural fire. A wildfire may be more precisely referred to by the terms bushfire, desert fire, forest fire, hill fire, peatland fire, prairie fire, vegetable fire, or veld fire, depending on the kind of vegetation that is present.

Wildfires are separate from controlled and prescribed burning, which is a good human use of wildland fire, even though controlled burns have the potential to turn into wildfires. Wildfires likely started shortly after terrestrial plants first appeared, which occurred in the Silurian epoch 419 million years ago, according to fossil charcoal. A wildfire destroys most of the plant life in a forest. Animals would be pushed out and lose their homes.

Therefore, animals would be pushed out and lose their homes.

To know more about wildfire, here:

https://brainly.com/question/12110285

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Answer:

La fuerza de atracción en el hielo sólido, que es un compuesto molecular, se debe al enlace de hidrógeno (que es la fuerza intermolecular más fuerte) entre las moléculas individuales de agua, por lo tanto, el hielo sólido es bastante fuerte y se mantiene en una estructura rígida.

Cuando el hielo se calienta, las moléculas absorben suficiente energía y, en lugar de solo la vibración del hidrógeno dentro de un área muy pequeña, los enlaces de hidrógeno se doblan y se estiran, con los ángulos y la longitud de los enlaces oscilando dentro de los rangos esperados.

Como tal, las fuerzas de atracción en el agua líquida son menores que las del hielo y las fuerzas de repulsión entre cargas similares tienen un efecto mayor en la plasticidad del agua que el hielo.

Explanation:

Answer:

Carbohydrates

Explanation:

this is because cytoplasm is a substance that fills living cells.

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Answer:

i don't know

Explanation:

Answer:

Plants normally turn dark green and look stunted (both leaves and stalks). Older leaves are first affected and may become violet. Sometimes the brown tips of the leaves remain fragile and their maturity seems to be delayed.

Explanation:

it is what it is booiiii

Answer:

Asteroids and comets have a few things in common. They are both celestial bodies orbiting our Sun, and they both can have unusual orbits, sometimes straying close to Earth or the other planets. ... While asteroids consist of metals and rocky material, comets are made up of ice, dust, rocky materials and organic compounds.

Answer:

M = 0.0678 M

Explanation:

Hello there!

In this case, since the molarity of a solution is obtained by dividing the moles by the volume, it is firstly necessary to compute the moles of magnesium chloride in 0.968 g, via its molar mass, as shown below:

[tex]n=\frac{0.968g}{95.21g/mol}=0.0102mol[/tex]

Next, since 150.0 mL in liters is 0.1500 L, according to the appropriate units, the resulting molarity is:

[tex]M=\frac{0.0102mol}{0.1500L}\\\\M=0.0678M[/tex]

Best regards!

Answer:

D. 5 electrons are located outside the nucleus.

Explanation:

Protons have a +1 positive charge, electrons have a -1 negative charge. Protons are in the nuclues and electrons are orbiting in the electron cloud.

Answer:

I think the oxygen.

Answer:

Oxygen (O2)

Explanation:

The fundamental importance of oxygen to life on this planet ensures its place in the care of patients with respiratory disorders. Although now well established for hypoxic patients, many questions remain regarding the benefits of oxygen for varying severity and types of chronic lung disease.

Answer:

An unbalanced force? .

Pls give me feedback if thats not right.

Answer: An arsenic, As, atom contains 33 protons inside the nucleus and 33 electrons outside the nucleus.

Explanation:

The protons are positively charged, electrons are negatively charged and neutrons has no charge (neutral).  The protons and neutrons are present inside the nucleus and the electrons are located outside the nucleus.

Antimony (Sb) has an atomic number of 51 and thus contains 51 electrons and 51 protons. It has a mass number of 121 and thus conatins 70 neutrons.

Manganese (Mn) has an atomic number of 25 and thus contains 25 electrons and 25 protons.

Chlorine (Cl) has an atomic number of 17 and thus contains 17 electrons and 17 protons.

Arsenic (As) has an atomic number of 33 and thus contains 33 electrons and 33 protons.

Answer:

Melting and cooling of a rock is like a chocolate bar because, when chocolate melts, it happens with heat just like melting of a rock. When chocolate cools, it just becomes a solid with no heat just like rocks when becoming an igneous rock.

Explanation:

You can kinda re-phrase it if u want cause yea. hhah.

Answer:

See explanation

Explanation:

From the formula for heat;

q (enthalpy change) = (mass of solution) x (specific heat capacity) x (temperature change)

Since the density and heat capacity of the solution are the same as that of pure water.

Mass of copper sulphate solution = 50 g

Heat = 50 * 4.18 * 50.6°C

Heat = 10575.4 J

Number of moles = 1 * 25/1000 = 0.025 moles

10575.4 J/ 0.025 moles = 432016 J/mol/1000

= 423 KJ/mol

or

q = - 423 KJ/mol

Answer:

if you want to protect our ozone depletion you have aerosol products that don't contain HCFCs and CFCs as stimulus or incitement

Explanation:

why you should use aerosol because when the liquid mixture is freeded or released from the aerosol the liquid propellant becomes a gas so this can easily break up the product into a fine haze or a mist hope its helpful have a good luck

Answer:

chemical energy

Explanation:

just put that

Answer:

chemical energy

Explanation:

it is the light dependent reaction

Answer:

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