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kondaur [170]
3 years ago
14

What is likely to happen if we can't control our experiment properly? A. Our hypothesis will have to be changed. B. We will need

to do other experiments and collect more data. C. Our hypothesis will be well-supported by the data we collect. D. We will have to make more inferences instead of collecting data.
Chemistry
2 answers:
REY [17]3 years ago
4 0
The answer to your question
is b 
katovenus [111]3 years ago
4 0

Answer:

The answer is <u><em>letter D</em></u>

Explanation:

It is the only one that makes sense, i dont have a proper explanation unfortunately, its just guts. sorry, this probably wont help, but i tried agaga

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How many atoms are represented in 28 grand of sodium
Nady [450]
The molar mass of sodium is 22.99 ㅤ ㅤ ㅤ 22.99 (28) = 643.72 mol now multiply by avogrados number to find the number of atoms. ㅤ ㅤ ㅤ 643.72 (6.022 x 10^23) = 3.88 x 10^26 number of atoms
8 0
4 years ago
2C_H. + 702 — 400, + 6H2O
astra-53 [7]

Balanced Eqn

2

C

2

H

6

+

7

O

2

=

4

C

O

2

+

6

H

2

O

By the Balanced eqn

60g ethane requires 7x32= 224g oxygen

here ethane is in excess.oxygen will be fully consumed

hence

300g oxygen will consume  

60

⋅

300

224

=

80.36

g

ethane

leaving (270-80.36)= 189.64 g ethane.

By the Balanced eqn

60g ethane produces 4x44 g CO2

hence amount of CO2 produced =

4

⋅

44

⋅

80.36

60

=

235.72

g

and its no. of moles will be  

235.72

44

=5.36 where 44 is the molar mass of Carbon dioxide

hope this helps

6 0
3 years ago
The dissolution of calcium chloride in water is given by the following equation:
never [62]

Answer:

The reactants would appear at a higher energy state than the products.

Have a nice day!

8 0
3 years ago
How are the Penguins shaped and influenced by the habitat they live in?​
Whitepunk [10]

Answer:

Explanation:

Penguins have webbed feet to help them swim, waterproof feathers and very good vision underwater , they also have thick skin and blubber to help them keep nice and warm so they can have fun and fish for food with out worrying about being very cold.  Hope that helped UwU

6 0
3 years ago
Look at the periodic table. Find the element carbon. What is its symbol?
Sliva [168]
A. ca is the answer because its short for carbon
6 0
4 years ago
Read 2 more answers
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