1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Phoenix [80]
2 years ago
12

What must be satisfied for a hypothesis to be useful?

Chemistry
2 answers:
kkurt [141]2 years ago
8 0
The answer is D. It must be testable
Alex_Xolod [135]2 years ago
5 0

Answer:

it must be testable I think that's the answer

You might be interested in
in an experiment 3.5g of element A reacted with 4.0g of element G to form a compound Calculate the empirical formula for this co
kolezko [41]

Additional information

Relative atomic mass(Ar) : A=7, G=16

The empirical formula : A₂G

<h3>Further explanation</h3>

Given

3.5g of element A

4.0g of element G

Required

the empirical formula for this compound

Solution

The empirical formula is the smallest comparison of atoms of compound forming elements.

The empirical formula also shows the simplest mole ratio of the constituent elements of the compound

mol of element A :

\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{3.5}{7}=0.5

mol of element G :

\tt mol=\dfrac{4}{16}=0.25

mol ratio A : G = 0.5 : 0.25 = 2 : 1

4 0
2 years ago
WILL MARK BRAINLY! Which chemical element has the shortest name?
Aleonysh [2.5K]

Answer:

boron I guess

hope this heps

5 0
3 years ago
Any element can always be identified by its:
Alborosie

Explanation:

atomic mass

Really...i think it can also be atomic number..

3 0
3 years ago
A gas is contained in a thick-walled balloon. When the pressure changes from 45.0 bar to 96.0 bar, the volume changes from 1.20
notsponge [240]

P1 * V1 ÷ T1 = P2 * V2 ÷ T2  

45 * 1.20 ÷ 314 = 96 * V2 ÷ 420  

30,144 * V2 = 22,680  

V2 = 22,680 ÷ 30,144  

The new volume is approximately 0.75 liter.

I hope I helped

5 0
3 years ago
Read 2 more answers
Gold is used for making ornaments give reason <br><br>​
Lena [83]

Answer:

they are nice to look at....

Explanation:

Gold does not tarnish, rust or corrode. Due to its wonderful qualities and its luster, gold is considered the most important metal in jewellery making. As pure gold is too soft for everyday wear, it is alloyed with a mixture of metals in order to make the gold harder, so it can be used for jewellery.

brainliest pls....

8 0
3 years ago
Read 2 more answers
Other questions:
  • The theater director offered every member of the drama one vote for which play they preferred to perform. The director found tha
    6·2 answers
  • Convert 345 NH3 grams to moles
    5·2 answers
  • Show the mechanism for the following reaction: cyclohexene bromine yields a dibromocyclohexane Unlike previous problem, this pro
    14·1 answer
  • Acid-catalyzed dehydration of an alcohol is an equilibrium situation. How was the reaction forced to completion in Acid-Catalyze
    9·1 answer
  • all of the following electromagnetic waves possess high energy that will damage the human body if overexposed, except _____. ult
    7·1 answer
  • From the following list of observations, choose the one that most clearly supports the conclusion that electrons have wave prope
    11·1 answer
  • Please make sure you are correct thank you!!
    6·2 answers
  • 1. How many moles of LiBr are present in 100 mL of 1.25M LIBr solution?
    7·1 answer
  • What is khasra record? What it tells?
    9·2 answers
  • I really need help with this problem.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!