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3 years ago

PLEASE HELP ME ITS DUE IN 1 HOUR PLZZZ

Chemistry

2 answers:

Rom4ik [11]3 years ago

8 0

I can tell me and you have chemistries

Ierofanga [76]3 years ago

5 0

I can’t use evidence from the picture but the green slime from the pond that they are talking about is called Algae, which is alive and can grow quickly with sunlight or any other source of energy such as water and carbon dioxide. Hope this helps!!

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balance by oxidation number method<br />KMnO4 + Na2O₂ + H2 so4 ko2so4 +<br />Mosou4 + Na2so<br />4 + O2 + H₂O

Katarina [22]

Answer:

8H2SO4 + 2KMnO4 + 5Na2O2 => 8H2O + 2MnSO4 + 5Na2SO4 + 5O2 + K2SO4

have:

Explanation:

6 0

3 years ago

A car can accelerate from a standstill to 100 km/h [E] in 9.60s. calculate the average acceleration

Lelu [443]

Answer:

Acceleration is :

a = 2.89 m/s2

Explanation:

Acceleration : It is the change in the velocity of the object per unit time.

The object starts from the rest , so the initial velocity of the object is zero.

Initial velocity , u = 0

Final velocity = 100 km/h

Change the velocity to m/s because[ time unit is in second(9.60 s)]

1 km = 1000 m

1 hour = 60 x 60 sec = 3600 sec

$1km/h=\frac{1000}{3600}m/s$

$1km/hr=\frac{5}{18}$

$100km/hr=\frac{5}{18}\times 100$

$v=\frac{5}{18}\times 100$

v = 27.78 m/s

u = 0 m/s

time = 9.60 s

The acceleration"a" is calculated using :

$a=\frac{v-u}{t}$

$a=\frac{27.78-0}{9.6}$

$a=\frac{27.78}{9.6}$

$a=2.89m/s^{2}$

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3 years ago

What are the two ways light moves through space? for astronomy the solar system

Mariana [72]

Answer:

The Solar System moves through the galaxy with about a 60° angle between the galactic plane and the planetary orbital plane. The Sun appears to move up-and-down and in-and-out with respect to the rest of the galaxy as it revolves around the Milky Way

Explanation:

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2 years ago

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Why does it matter if atoms are divisible ???

Andreyy89

Atoms are divisible contrary to the early beliefs that the smallest "indivisible" matter is an atom. When an atom loses its identity it means that they are divisible. Atoms chemically react with other kinds of atoms thus changing their activity.

They certainly are not that important to our lives, but it’s good to know :)

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3 years ago

Please help check over my work, sorry for spamming

steposvetlana [31]

Answer:

reflection you're right

Explanation:

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3 years ago

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