Answer:
See Below.
Explanation:
This is a conversion problem:
Using the molar mass of Gold (given in a periodic table) which is 196.97g/mol
you have
[tex](3.60*10^-5 g) *\frac{1moles}{196.97g}[/tex]
you always arrange the equation in a way to cancel whatever you don't want (grams) and leave what you do want (moles). Here grams cancel (top and bottom), so you're left with:
[tex]\frac{(3.60*10^-5 g) *(1)}{196.97} = 1.83*10^-7[/tex] moles of Gold
What is true about ionic compounds?
Select all that apply.
A. Properties of the compound are different than the properties of individual atoms that make the compound.
B. Electrons are not involved in the formation of an ionic bond, since ions do not have valence electrons.
C. Electrons are not free to move.
D. They may have a positive or negative charge.
Someone please help me I got a few minutes
Answer:
30 feet /second
Explanation:
60 feet/ 2 sec = 30 feet/sec
Answer:
30 feet/sec
Explanation:
Average speed = distance / time (distance divided by time)
Average speed = 60 feet / 2 seconds
Average speed = 30 feet/sec
So the anverage speed is 30 feet per second
HOPE IT HELPED
how many moles of water are in 1.23 times 10^18 water molecules
Answer:
The answer is 0.000002 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\ [/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{1.23\times {10}^{18} }{6.02 \times {10}^{23} } \\ = 0.00002043...[/tex]
We have the final answer as
0.000002 molesHope this helps you
10 uses of water good answer
Answer:
For drinking.
For cleaning dishes.
For cooking.
for watering plants.
for washing clothes.
for bathing.
for generation of hydroelectricity.
for washing car.
making our dog bath
it helps in maintaining osmotic rate in humans
Explanation:
Hope this helps u
Crown me as brainliest
Answer:
drinking,washing clothes ,washing dishes ,cooking,watering plants,cleaning ,for generation of hydroelectricity,washing vehicles,aquatic life,bathing
Explanation:
follow me pls.
which element would have properties most like arsenic (As)? Te Ge P Se
Answer:
P
Explanation:
Please help will give brainliest
6 g/cm³
Explanation:Hi there !
density formula
d = m/V
V = 33.0ml - 25.0ml = 8.0 ml = 8 cm³
m = 48.0 g
replace
d = 48g/8cm³ = 6 g/cm³
Good luck !
A ball initially at rest is dropped from a window sill 14.2 m off the ground. Find the velocity of the ball the moment it hits the ground. Round your answer to 2 decimals places.
Answer:
16.68 m/s
Explanation:
The following data were obtained from the question:
Height (h) = 14.2 m
Initial Velocity (u) = 0 m/s
Final velocity (v) =?
Thus, the velocity (v) with which the ball hit the ground can be obtained as follow:
v² = u² + 2gh
NOTE: the acceleration due to gravity (g) = 9.8 m/s²
v² = u² + 2gh
v² = 0² + 2 × 9.8 × 14.2
v² = 0 + 278.32
v² = 278.32
Take the square root of both side
v = √278.32
v = 16.68 m/s
Therefore, the velocity with which the ball hit the ground is 16.68 m/s