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
MArishka [77]
3 years ago
9

Which of the following is a direct observation? A. Music may help plants grow B. The plant is 22cm on day 23 C. two plants must

have died from insects D. The plants will likely grow 2cm per day 2. A new fertilizer is being tested to determine if it will help plants grow. Each day the researcher gives fertilizer to half the plants and measures the height of all plants. This is an example of which step in the scientific method? A. Ask a question B. Conduct the experiment C. Form a conclusion D. From a hypothesis
Chemistry
2 answers:
Marizza181 [45]3 years ago
8 0
The answer is B for number 1 because rather than it being an observation it is something that you know for sure happened without guessing. 

the answer is B the researcher is actually adding the fertilizer and measuring it.
s344n2d4d5 [400]3 years ago
8 0

Answer:

The correct answer will be options:

1. option-B

2. option-B

Explanation:

<u>Case I </u>

Making an act of direct observation is a way of collecting information in which the observer observes a natural behavior in its natural environment without making assumptions.

In the given questions, the case of direct observation will be when the height of the plant is measured on 23rd day. Thus, Option-B is the correct answer.

<u>Case II </u>

In the given question, the researcher wants to determine the effect of fertilizer on the growth of the plant so he decides to perform an experiment by giving fertilizers to plants.

This is an act of performing an experiment and thus Option-B is the correct answer.

You might be interested in
If a frog has 26 chromosomes in its body cells, then it must have ______ cells in its gametes
miskamm [114]

Answer:

sxfdcghbjkml

Explanation:

4 0
2 years ago
POINTS AND BRAINIEST ANSWER!!!!
Marizza181 [45]

Answer:6 valence electrons

and

one valence electron

Explanation:

4 0
3 years ago
Read 2 more answers
Determine the oxidation number for nitrogenin
iris [78.8K]

Answer:

1(a) N = 3

(b) N = 0

(c) N = 5

(d) N = -2

(2) Molecular formula for benzene is C6H6

Explanation:

1(a) N02 1-

N + (2×-2) = -1

N-4 = -1

N = -1+4 = 3

(b) N2

2(N) = 0

N = 0/2 = 0

(c) NO2Cl

N + ( 2×-2) + (-1) = 0

N - 4 - 1 = 0

N - 5 = 0

N = 0+5 = 5

(d) N2H4

2(N) + (4×1) = 0

2N + 4 = 0

2N = 0 - 4 = -4

N = -4/2 = -2

(2) Molcular mass of benzene = 78g/mole = (6×12g of carbon) + (6×1g of hydrogen) = 72+6 = 78g/mole

Therefore, molecular formula for benzene is C6H6

7 0
3 years ago
Help plssss <br><br> The question is in the picture above
Paul [167]

Answer:

The answer is : A

8 0
2 years ago
Read 2 more answers
A NaOH (aq) stock solution was created by dissolving 3.88 g NaOH in water to create a 100.00 mL solution. What is the concentrat
Ierofanga [76]

Answer:

I have don 3 so far

Explanation:

Brainlyis the best

8 0
2 years ago
Other questions:
  • BRAINLIESTT ASAP!! PLEASE HELP ME :)
    12·1 answer
  • Murphy built a simple motor with a battery, permanent magnet, copper coil of wire and iron bar. When the motor is turned on, the
    9·1 answer
  • Electrons are ejected from a surface with speeds ranging up to 1380 km/s when light with a wavelength of 173 nm is used. What is
    11·1 answer
  • PLEASE READ MARKING BRAINIEST
    8·1 answer
  • : Name the parts of transverse waves?
    7·1 answer
  • Rewrite this measurement with a simpler unit, if possible.<br> 4.5·m2m2m
    5·1 answer
  • ) A technique once used by geologists to measure the density of a mineral is to mix two dense liquids in such proportions that t
    11·1 answer
  • What has more mass 100 apples or 100 grapes? Why?
    9·2 answers
  • PLEASE help i will give brainly if someone answers A pleeease help it will help me answer my other questions
    14·1 answer
  • If the pressure of the gas is doubled while the volume is held constant, what happens to its temperature?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!