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
Olin [163]
4 years ago
6

NEED HELP! An experiment _____. must always be done in a laboratory is best done if only one variable is tested for at a time ca

n be done only by direct observation must always be done in the field
Chemistry
1 answer:
hichkok12 [17]4 years ago
6 0

Answer:

Chemically

in chemistry

You might be interested in
Calculate the number of molecules in 0.75 moles of CH₄. x 10²³ molecules
spin [16.1K]

<u>Ans :</u>4.5 * 10²³ molecules

<u>Given:</u>

Moles of CH4 = 0.75

<u>To determine;</u>

The number of molecules of CH4 in 0.75 moles

<u>Explanation:</u>

1 mole of CH4 contains Avogadro's number i.e. 6.023*10²³ molecules

Therefore, 0.75 moles would correspond to :

= 0.75 moles * 6.023*10²³ molecules/1 mole

= 4.5 * 10²³ molecules

7 0
3 years ago
Match the substance with its chemical formula.
ch4aika [34]
H 3 0 + is hydronium ion. OH- is hydroxide ion. H+ is hydrogen ion
4 0
4 years ago
Read 2 more answers
determine the grams of NH3 produced when 6.70 grams of N2 is consumed using the following equation: N2 + 3H2 = 2NH3 ​
tangare [24]

Answer:

Hi im an online tutor and I can help  you with  your assignments. we have experts in all fields. check out our website for assistance https://toplivewriters.com

Explanation:

8 0
3 years ago
An ionic bond always forms between _____ ion with a positive charge and _____ ion with a negative charge.
seropon [69]

Answer:

Cation and anion

Explanation:

Positive ion is known as cation and negative ion is known as anion

5 0
3 years ago
What is the volume, in liters, of 573 g of SO2 gas at STP?
Fiesta28 [93]

Answer:

Explanation:

The answer is 202

7 0
3 years ago
Other questions:
  • Is Pbs soluble in water
    12·1 answer
  • Describe the electrodes in this iron-copper galvanic cell.
    9·1 answer
  • (a) At 800 K the equilibrium constant for I2(g) 2 I(g) is Kc = 3.1 10-5. If an equilibrium mixture in a 10.0-L vessel contains 3
    14·1 answer
  • A student weighs a container and then adds air. When the student weighs the container again the weight will be: a.less b.more th
    9·2 answers
  • The current scientific verdict on the phlogiston theory demonstrates which two of the following principles?
    13·1 answer
  • I WILL MARK WHOEVER ANSWERS THIS AND BRAINLIEST
    10·1 answer
  • The part of the atom where electrons move is the what
    14·2 answers
  • How can objects all be the same size but have a different mass? *help quick*
    12·1 answer
  • For a phase change, AH = 31 kJ/mol and Sº= 0.093 kJ/(K-mol). What are
    6·1 answer
  • Use Appendix C to rank the following in order of increasing acid strength: HIO₃, HI, CH₃COOH, HF.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!