Fe, 0, + 3C --> 2Fe + 3 CO,
2 SO, + 02 S0, + 0, ---> 2 SO,
2 Ag,0 ----> 2 Ag + O2> 02
Answer:
the last one is the answer
a Elliptical, circular
b Circular, elliptical
C Circular, oval
d None of the above
Answer:
A
Explanation:
I don't know how to say how I got it.
Answer:
d
Explanation:
the orbits of the planets in our circular elliptical and circular
Answer:- 0.80 moles
Solution:- Number of atoms of tungsten are given and we are asked to calculate the moles of tungsten atoms. So, it is a atom to mole conversion and for this we use the Avogadro number.
Number of atoms are divided by Avogadro number to get the number of moles.
Avogadro number is . Given number of atoms is
. let's divide it by Avogadro number.
Numerator and denominator has equal exponent so it is canceled. So, we only need to divide 4.8 by 6.022 and round the answer to two sig figs as given number of atoms has only two sig figs.
= 0.80 moles
Hence, there are 0.80 moles of tungsten atoms in given number of atoms.
Answer True
Explanation:
The correct answer is: Option (D) 120g
Explanation:
We are given the following:
Mass of sugar = 20 g
Mass of water = 100 g
When sugar is completely dissolved into water, the mass of the solution will get:
mass-of-solution = mass-of-sugar + mass-of-water
mass-of-solution = 20 + 100
mass-of-solution = 120 g (Option D)