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
Ilia_Sergeevich [38]
3 years ago
11

How can a scientist ensure that his or her data are reliable? by making a single observation by repeating trials during an exper

iment by recording values without units by keeping the results private
Chemistry
2 answers:
Readme [11.4K]3 years ago
8 0

Answer:

B.by repeating trials during an experiment

Simora [160]3 years ago
5 0

Answer:

D. By repeating trials during an experiment

Explanation:

You might be interested in
What is co-wolent bond?<br><br>​
alex41 [277]

Answer:

Explanation:

This is a bond with reacts with metal's

7 0
3 years ago
Please help me on this.
Anika [276]
True will end up being the answer
6 0
3 years ago
Read 2 more answers
What is Δn for the following equation in relating Kc to Kp?2 SO2(g) + O2(g) ↔ 2 SO3(g)23-2-11
san4es73 [151]

Answer:

-1

Explanation:

The relation between Kp and Kc is given below:

K_p= K_c\times (RT)^{\Delta n}

Where,  

Kp is the pressure equilibrium constant

Kc is the molar equilibrium constant

R is gas constant

T is the temperature in Kelvins

Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)

For the first equilibrium reaction:

2SO_2_{(g)}+O_2_{(g)}\rightleftharpoons2SO_3_{(g)}

<u>Δn = (2)-(2+1) = -1  </u>

Thus, Kp is:

K_p=  K_c\times (RT)^{-1}

4 0
3 years ago
PLEASE HELP!<br><br> See picture
Darya [45]

Answer:

See Explanation

Explanation:

The equation of the reaction;

KHSO4(aq) + KOH(aq) -------> K2SO4(aq) + H2O(l)

Number of moles of KHSO4 = 49.6 g/136.169 g/mol = 0.36 moles

Since the reaction is in a mole ratio of 1:1, 0.36 moles of K2SO4 is produced.

Number of moles of KOH = 25.3 g/56.1056 g/mol = 0.45 moles

Since the reaction is 1:1, 0.45 moles of K2SO4 is produced

Hence K2SO4 is the limiting reactant.

Mass of K2SO4 formed = 0.36 moles of K2SO4 * 174.26 g/mol = 62.7 g

So;

1 mole of KHSO4 reacts with 1 mole of KOH

0.36 moles of KHSO4 reacts with 0.36 * 1/1 = 0.36 moles of KOH

Amount of excess KOH = 0.45 moles - 0.36 moles = 0.09 moles

Mass of excess KOH = 0.09 moles * 56.1056 g/mol  = 5 g of excess KOH

5 0
3 years ago
5. Calcium carbonate decomposes at 12000 C to form carbon dioxide and calcium oxide. If 25 liters of carbon dioxide are collecte
Anika [276]

Answer:

5)0.53liters

6)1.634.6°c

Explanation:

using \:  charles \: law \\ v1 \div t1 = v2 \div t2

5) v1=25liters, t1=12000°c. v2=?, t2=250°c

v2=(250×25)/12000

v2=6250/12000

v2=0.52liters

6)v1=130,v2=85, t1=2500, t2=?

t2=(85×2500)/130

t2=212500/130

t2= 1634.6°c

5 0
3 years ago
Other questions:
  • What are some interesting facts about Dmitri Mendeleev?
    9·1 answer
  • If Plank's constant is 6.6 x 10(-34) J/Hz, then what is the approximate frequency of a photon having an energy of 3 x 10(-19) Jo
    11·1 answer
  • Name the following straight-chain Alkanes (picture)
    9·1 answer
  • Conserving the quality of available water is a high priority world-wide. There are many countries where the water supply is reac
    7·1 answer
  • A container is filled with hydrogen gas. It has a volume of 4 liters and a pressure of 2 atm. If the pressure of the container i
    9·1 answer
  • A pot of water is heated on a gas-flame stove and begins to boil. Which two
    14·2 answers
  • In the following net ionic equation, identify each reactant as either a Bronsted-Lowry acid or a Bronsted-Lowry base. HCN(aq) H2
    13·1 answer
  • Part C<br> Number of molecules in 8.437x10-2 mol C6H6
    12·1 answer
  • How many electrons in an atom can have the following quantum
    9·1 answer
  • What mass of NaOH would need to be dissolved in 500.0 mL of water to produce a solution with a pH of 12.40
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!