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
agasfer [191]
2 years ago
14

A scientific ________ must have a control, so that the variables that could affect the out come is reduced. A:experiment B:concl

usion. C:investigation. D:reasoning
Chemistry
1 answer:
Lostsunrise [7]2 years ago
4 0

Answer:

A.experiment

Explanation:

hope this helps

You might be interested in
Traits are passed from parents to offspring. These traits are determined by
Nookie1986 [14]

Answer: Gene Characteristic. (They are usually made up of more than one gene).

8 0
2 years ago
A 5.00 gram sample of magnesium sulfate hydrate (epsom salt) is heated in the lab to form anhydrous magnesium sulfate. After hea
Ostrovityanka [42]

Answer:

The answer to your question is  MgSO₄ 5H₂O

Explanation:

Data

mass of MgSO₄ = 2.86 g

mass of H₂O = 2.14 g (5 - 2.86)

Process

1.- Calculate the molecular mass of the compounds

MgSO₄ = 24 + 32 + (16 x 4) = 120

H₂O = 16 + 2 = 18

2.- Convert the grams obtain to moles

                        120 g of MgSO₄  --------------- 1 mol

                         2.8 g                  ----------------  x

                         x = (2.8 x 1)/120

                        x = 0.024 moles

                         18 g of H₂O --------------------- 1 mol

                         2.14 g           -------------------- x

                         x = (2.14 x 1)/18

                         x = 0.119

3.- Divide by the lowest number of moles

MgSO₄  = 0.024/0.024 = 1

H₂O = 0.119/ 0.024 = 5

4.- Write the molecular formula

                   MgSO₄5H₂O                        

5 0
3 years ago
Students were asked to identify the location of elements in the
Naddika [18.5K]

Answer:амьсгал боогдов гэж найдаж байна

Explanation:

4 0
2 years ago
Otra manera para llamar la aceleración negativa es_______
enyata [817]

Answer:

creo que es cinemática, eso creo

8 0
2 years ago
A student found that the titration had taken 10.00 ml of 0.1002 m naoh to titration 0.132 g of aspirin, a monoprotic acid. calcu
Harman [31]
The balanced equation for the reaction between NaOH and aspirin is as follows;
NaOH + C₉H₈O₄ --> C₉H₇O₄Na + H₂O
stoichiometry of NaOH to C₉H₈O₄ is 1:1
The number of NaOH moles reacted - 0.1002 M / 1000 mL/L x 10.00 mL 
Number of NaOH  moles - 0.001002 mol
Therefore number of moles of aspirin - 0.001002 mol
Mass of aspirin reacted - 0.001002 mol x 180.2 g/mol = 0.18 g
However the mass of the aspirin sample is 0.132 g but 0.18 g of aspirin has reacted, therefore this question is not correct.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Identify the precipitation reaction in the set?
    15·1 answer
  • A geologist wants to find more out more about a new discovery in his filed. What type of source should he consult
    15·1 answer
  • 17.Observe the given figure carefully-
    9·1 answer
  • _______ is usually measured in cubic meters per second. A. Discharge B. Bed load C. Flooding D. Suspension
    8·2 answers
  • 1. What is energy measured in? 2. What should you consider when choosing which food you eat each day? 3. Name some energy stores
    15·1 answer
  • In general, as activation energy increases, reaction rate ________. goes down if the reaction is exothermic goes down if the rea
    9·1 answer
  • What is the molecular shape of HCN
    15·1 answer
  • What is the unit for electric current.​
    12·1 answer
  • Most of an atom consists of empty space. Its mass is concentrated in its center, which is called the
    10·1 answer
  • How much water needs to be added to 100 mL of a 20%w solution of copper (II) sulfate to prepare a 0.01-M solution?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!