Answer:
add the acid
Explanation:
D. When you mix acid with water, it's extremely important to add the acid to the water rather than the other way around. This is because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid
Answer:
CCl4
Explanation:
In CCl4, there have been 4 symmetric arrangement of bonds around the main(center) carbon atom. Every bond is polar, that you can decide by contrasting carbon's and chlorine's electronegativity. The electronegativity corresponds to how powerfully the electrons bind the molecule. Whenever the two atoms in a covalent bond have opposite electronegativity, they can transfer their electron pair in that bond to one atom, creating a polar bond.
Since the 4 chlorine atoms are symmetrically arranged, the bonds ' polarity cancels each other out, rendering them a non-polar molecule.
This question asks to compare the energy emitted by a piece of iron at T = 603K with the energy emitted by the same piece at T = 298K.
Then you need to use the Stefan–Boltzmann Law
That law states that energy emitted (E) is proportional to fourth power of the to the absolute temperature (T), this is E α T^4 (the sign α is used to express proportionallity.
Then E (603) / E (298) = [603K / 298K]^4 = 16,8
Which meand that the Energy emitted at 603 K is 16,8 times the energy emitted at 298K.
Take the number of the exponent and move the decimal that many places. If it is positive move it left and if it is negative move it right.
For Example:
2.57x10³= 2570
Fill in any access spaces with zero.
Taking that same number to the negative 3 power
2.57x10^-3
0.00257
I put a 0. to show it is a distinctive decimal.
Answer:
Chemical change
Explanation:
The beans you ate turned into a flammable gas some weird thing must have happened in your stomach to make it into gas