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
sladkih [1.3K]
3 years ago
10

What is the dependent variable in the experiment where we investigated The affects of directed light on plant stem

Chemistry
1 answer:
Mekhanik [1.2K]3 years ago
8 0

Answer:

Hey I dont know it but good luck!! :)

Explanation:

You might be interested in
A student bought a statue made up of copper. after a couple of months it acquired a dull green coating, explain the reason with
swat32
I have no formula however the process would be erosion... copper is a type of metal and when it rots from water or any type of liquid damage it erodes and gets that green coat.
4 0
3 years ago
An excess of sodium carbonate, Na2CO3, in solution is added to a solution containing 15.71 g CaCl2. After performing the experim
OlgaM077 [116]

Answer:

93.15 %

Explanation:

We have to start with the chemical reaction:

CaCl_2~+~Na_2CO_3~->~CaCO_3~+~NaCl

Now, we can balance the reaction:

CaCl_2~+~Na_2CO_3~->~CaCO_3~+~2NaCl

Our initial data are the 15.71 g of CaCl_2, so we have to do the following steps:

1) <u>Convert from grams to moles of CaCl_2 using the molar mass (110.98 g/mol).</u>

2) <u>Convert from moles of CaCl_2 to moles of CaCO_3 using the molar ratio. ( 1 mol CaCl_2= 1 mol of CaCO_3).</u>

3) <u>Convert from moles of CaCO_3 to grams of CaCO_3 using the molar mass. (100 g/mol).</u>

15.71~g~CaCl_2\frac{1~mol~CaCl_2}{110.98~g~CaCl_2}\frac{1~mol~CaCO_3}{1~mol~CaCl_2}\frac{100~g~CaCO_3}{1~mol~CaCO_3}=14.16~g~CaCO_3

Finally, we can calculate the yield percent:

%~=~\frac{13.19~g~CaCO_3}{14.16~g~CaCO_3}*100=93.15~%

I hope it helps!

5 0
4 years ago
2. What is the average height in cm for plants in group 2? * 38 cm 56 cm 97 cm 114 cm
Nina [5.8K]

Answer:

76.25cm

Explanation:

38cm + 56cm +97cm +114cm = 305cm

305cm÷4 = 76.25cm

6 0
3 years ago
Is Jacinth non silicate or silicate?
AleksAgata [21]
Its i believe silicate
6 0
3 years ago
How do you do this problem?
xeze [42]

Answer:

Ag₂CrO₄(s) + H⁺(aq) ⟶ 2Ag⁺(aq) + HCrO₄⁻(aq)

Explanation:

Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + CrO₄²⁻(aq).

Silver chromate is the salt of a strong base (AgOH) and a weak acid (H₂CrO₄).

HCrO₄⁻ is an even weaker acid than H₂CrO₄, so CrO₄²⁻ is a strong base.

Any added H⁺ will immediately combine with the chromate ions according to the reaction

H⁺ + CrO₄²⁻ ⟶ HCrO₄⁻

thereby removing chromate ions from solution.

According to Le Châtelier's Principle, more silver chromate will dissolve to replace the chromate ions that the H⁺  removes.

The overall equation for the reaction is

Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + <em>CrO₄²⁻(aq) </em>

<u>H⁺(aq) + </u><em><u>CrO₄²⁻(aq)</u></em><u> ⟶ HCrO₄⁻(aq) </u>

Ag₂CrO₄(s) + H⁺(aq) ⟶ 2Ag⁺(aq) + HCrO₄⁻(aq)

3 0
3 years ago
Other questions:
  • If 125 ml of o2 gas exerts a pressure of 1.0 atm inside a cylinder, what will the pressure be if the cylinder compressed the vol
    15·1 answer
  • Consider the reaction zn + no− 3 → nh3 + zn(oh)2− 4 carried out in an aqueous basic solution. when the equation is properly bala
    8·1 answer
  • What's the density of a substance if the mass is 3.1g and it occupies 4.1 mL?
    6·1 answer
  • How is 0.246¯¯¯¯ written as a fraction in simplest form?
    14·1 answer
  • How many atoms are in 165 g of calcium?
    13·2 answers
  • Classify the following amine as 1º, 2º, 3º or 4°
    15·1 answer
  • The table below gives the numbers of protons, electrons, and neutrons in four atoms.
    6·1 answer
  • What is chemistry and how is it different from biology
    9·1 answer
  • describe a habitat of giraffe or an elephant(i prefer the giraffe tho, and please make it reasonable)
    15·1 answer
  • A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!