Explanation:
The law of conservation of mass states that the total mass of the products is equal to the total of the reactants.
A chemical change occurs because of a chemical reaction.
In a chemical reaction, the reactants are the starting substances and the products is the finishing substances. The amount of each type of atoms to start with and end with are also equal.
No matter disappears after a chemical reaction.
Answer:
The amount of matter in the new substances is the same as the original.
This is known as the law of conservation of mass.
Answer:
i would say 10, so the anser is A.
Explanation:
because there are the same number of protons and electrons, therefore for a regular O, you are supposed to have only 8 protons, but it is charged, thus, whatever the charge is will be taken into consideration into how much the proton and electron doe it have. Thus, for this case, it has 10, because the charge is negative and you have 8 electron plus 2 = 10.
Answer:
2.1 x 10^6 J
Explanation:
Long story short, just think of the units of every question and then think again which unit needs to be cancelled out inorder for you to get the one which is asked.
the formula to calculate heat energy is Q = mcT
T - change in temperature
m - mass of substance
c - specific heat capacity of substance
the change in temperature is already given but you will need to change it to kelvin inorder for it to get cancelled out with the unit under specific heat capacity which is J/k gram. Tk = Tc + 273 = 3.32 + 273.15 = 276.47K
now keep in mind that c varies from substance to substance.
in this case it is 4.18J/k.g for water.
you will also need to convert the mass from kilograms to grams so it can cancel out as well. so now let's multiply 1.82 kg by a 1000 so that we can convert it to grams. which is equivalent to 1820g
now it's all set...let's substitute the values we dag out in the Heat formula Q = mcT
=1820g x 4.18Jk.g x 276.47K = 2.1 x 10^6J
so this is out final answer for heat required to raise the temperature of water by the particularly given quantity.
peace to you.
Answer:
I'm rly confused but Si stands for silicon in the compound if that's what ur asking
hope it helps tho
Answer:
Passive Transport
Explanation:
The three examples of passive transport are
Diffuison
Osmosis
facilated diffuison
So the answer can be A or B