It late, I need help quick

Answer:

Thus, the required heat is 79kJ 79 k J .

Explanation:

i think its the right bottem one

Answer:

Explanation:

The correct answer is

energy resulting from the flow of charged particles , such as electrons or ions.

hope it helps :)

Answer:

15.3 g

Explanation:

First we convert 8.0 grams of aluminum into moles, using its molar mass:

Then we convert 0.30 moles of aluminum into moles of aluminum oxide, using the stoichiometric coefficients:

Finally we convert 0.15 moles of Al₂O₃ into grams, using its molar mass:

Answer:

1200g H20.

Explanation:

Write out the balanced equation... when an organic compound is burned, like C2H2, it is burned in oxygen (O2) and produces Water and Carbon Dioxide (CO2)

so 2C2H2 + 5O2  =  2H2O  + 4CO2

now that you have a balanced equation just convert to moles and solve

2000g C2H2 * 1mol C2H2 / 30gC2H2 * 2mol H2O/2mol C2H2 * 18gH2O/1molH20 = 1200g H20.

Answer:

lol this is what you get for not answering my question and stealing points

Explanation:

Answer:

Anaphase II

Explanation:

Answer:

=144a⁴−168a³b−239a²b²+168ab³+144b⁴

Explanation:

=144a⁴−168a³b−239a²b²+168ab³+144b⁴

Answer:

[tex](4a + 3b)(4a + 3b)(3a - 4b)(3a - 4b) \\ {16a}^{2} + 12ab + {9b}^{2} + 12ab + {9a}^{2} + 12ab + 12ab + {16b}^{2} \\ {16a}^{2} + {9a}^{2} + {9b}^{2} + {16b}^{2} + 12ab + 12ab + 12ab + 12ab \\ {25a}^{2} + {25b}^{2} + 48ab[/tex]

Answer:

C) The puck gradually slows down because friction would be acting on it.

Explanation:

It would be C because the puck would be scraping the ice and when it's scraping it slowly losses its speed because the ground is pushing it lightly

Hoped that helped :/

Answer:he’s right

Explanation:

Lithium nitride is the only alkali metal nitride which has the chemical formula Li₃N and it reacts with water to produce ammonia and lithium hydroxide. The charges of each ion are +1 and -3. The correct option is B.

The ions which are positively charged are called the cations whereas the ions which are negatively charged are called the anions. The combination of the cations and anions results in the formation of an ionic compound.

In lithium nitride, the cation is Li⁺ and the anion is N³⁻. The charge on the nitride ion is -3 and that of the lithium ion is +1. The total number of electrons present in the molecule is 10. Because the number of protons is 7 and 3 electrons were added from -3 on the nitride ion.

Thus the correct option is B.

To know more about Lithium nitride, visit;

https://brainly.com/question/29045572

#SPJ5

Answer:

Human activities have a tremendous impact on the carbon cycle

Explanation:

Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... The ocean absorbs much of the carbon dioxide that is released from burning fossil fuels.

Answer:

2 K(s) + Cl₂ (g) --> 2 KCl(s)

Explanation:

Potassium will just be K

Chlorine gas is part of BrIClHOF, which are diatomic gasses. So Cl₂

Looking at the periodic table potassium K has an ion charge of +1 and chlorine Cl has an ion charge of -1, so in a balanced compound they will be written as KCl

Balancing the amounts of each will lead to 2 K(s) + Cl₂ (g) --> 2 KCl(s)

Answer:

i believe it is a

Explanation:

The reason is :a.They can gain more food for their offspring

Animals tend to protect their territory because they don't want  intruders to invade their territory.

Animals majorly protect their territory in order to protect their foods from been eating by intruders as this will enables their offerings to have enough foods to eat.

They as well guard  their territory in order to prevent intruders from invading the place they have prepare as their mating place.

Inconclusion  The reason why some animals defend  their territory after they have mated

and reproduced is :a.They can gain more food for their offspring

Learn more here:

https://brainly.com/question/19604368

Answer:

0.04506 mol

Explanation:

For this problem, you need to convert grams to moles.  To do this, you need the molar mass, which is given.  Divide the mass by the molar mass to find the moles you have.

(5.001 g)/(110.98 g/mol) = 0.04506 mol

Answer:chemical markers

Explanation:

I’m smart give brainlest plz

Answer:

H2O2

Explanation:

There's hydrogen and ox in the formula to represent

Answer:

the electron of one atom and the nucleus of another

Answer:

Thermal Transfer.

Explanation:

If you touch a hot object, the heat is transferred from the object to your hand through conduction. (This is the actual answer.)

Answer:

One of water's most significant properties is that it takes a lot of heat to it to make it get hot. Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C.

Explanation:

Answer:

981.82g or 0.982 kg

Explanation:

I believe this is Physics, but okay!

We have to use the Specific Heat Capacity formula here.

Heat energy = mass x specific heat capacity x change in temperature

mass = Heat energy/(specific heat capacity x change in temperature)

Heat energy is measured in Joules so we need to find out how to do this.

To find an amount in Joules, we are given 135g and 0.89J/g°C.

135g x 400°C = 54000 to give us g°C

54000 x 0.89 = 48060  By multiplying these two values, we get given 48060J.

This is because: g°C/1 x J/g°C = Joules on it's own

mass = (48060)/[0.89 x (80 - 25)]

mass = 981.82g

Answer:

22

Explanation:

Answer:

They attract each other

Explanation:

A magnet has two poles;

North pole and south pole

When two opposite poles are placed close to each other, they attract each other. The short rule is opposite opes attract.

When two like poles are placed close to each other, they repel each other. The short rule is like poles repel.