As the tone gets higher, the sound waves get closer together
Answer:
0.00120 moles of electrons had traveled through the wire.
Explanation:
Amount current passed in 132 seconds = 0.880 A
Charge passed in 132 seconds = Q
Number of electrons = N
Magnitude of charge on an electron = q =
1 mole = ions/ particles/ atoms
The moles of electron in electrons:
0.00120 moles of electrons had traveled through the wire.
The gram formula mass is another term for the mass of one mole of the substance which can be calculated by adding up the masses of the elements comprising the formula unit, molecules, etc.
a. Barium Fluoride (BaF2)
m = mass of Ba + 2(mass of F)
m = 137.327 g + 2(19 g)
m = 175.327 g
b. Strontium Cyanide (Sr(CN)2)
m = mass of Sr + 2(mass of C) + 2(mass of N)
m = 87.62 + 2(12) + 2(14)
m = 139.62 g
c. Sodium hydrogen Carbonate (NaHCO3)
m = mass of Na + mass of H + mass of C + 3(mass of O)
m = 23 + 1 + 12 + 3(16)
m = 84 g
d. Aluminum sulfide (Al2S3)
m = 2(mass of Al) + 3(mass of S)
m = 2(26.98) + 3(32)
m = 149.96 g
Answer:
element and compound.
Explanation:
reason
an element is a pure substance that cannot be broken down into simpler substances by any ordinary physical or chemical process.
and compound is a pure substance that consists of two or more elements held together in fixed proportions by natural forces called chemical bonds.
homogeneos and heterogenous mixtures are considered impure substances because they dont have a definite composition.
<h3>the different modes of reproduction in animals such as butterflies, mosquitoes, frogs, cats, and dogs (sexual and asexual)??? </h3>
Ans: <em><u>Dogs, cats, frogs, butterflies, mosquitoes, and many other animals reproduce by sexual reproduction. Animals have gonads, organs that produce egg or sperm.</u></em>
<h3>a. Cut and paste pictures of animals and their young that are reproduced sexually(cats, dogs, etc.) ???</h3>
Ans: <em><u>your answer is in above </u></em>
<h3>b. Cut and paste pictures of animals and their young that are reproduced asexually(butterflies, mosquitoes) ????</h3>
Ans: <em><u>your Answer is in above </u></em>