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
uranmaximum [27]
2 years ago
8

Which of the following instrument would you use to see a plant cell?

Chemistry
2 answers:
olya-2409 [2.1K]2 years ago
7 0
B) is use too see plant cells
Gemiola [76]2 years ago
3 0
B . microscope
this is the answer .
You might be interested in
Mass=4grams Density=2g/ml
Tom [10]

Answer:

you can also get the target audience for the first one in the world 35ml.

8 0
3 years ago
An automated filling machine is used to fill bottles with liquid detergent. A random sample of 20 bottles results in a sample va
taurus [48]

Answer:

No, there is no evidence that the manufacturer has a problem with underfilled or overfilled bottles, due that according our results we cannot reject the null hypothesis.

Explanation:

according to this exercise we have the following:

σ^2 =< 0.01 (null hypothesis)

σ^2 > 0.01 (alternative hypothesis)

To solve we can use the chi-square statistical test. To reject or not the hypothesis, we have that the rejection region X^2 > 30.14

Thus:

X^2 = ((n-1) * s^2)/σ^2 = ((20-1)*0.0153)/0.01 = 29.1

Since 29.1 < 30.14, we cannot reject the null hypothesis.

4 0
3 years ago
Read 2 more answers
1) Determine a fórmula da base hidróxido de bário: * 1 ponto a) b) c) d) 2) As bases são substâncias iônicas, ou seja, quando sã
Reika [66]

Answer:

1) Ba(OH)₂

2) The correct option is a) they conduct electricity.

Explanation:

To deduce the formula of Barium hydroxide, we have to go to the periodic table and look for the Barium (Ba), which is in group 2 and has an ionic charge of 2+. Hydroxides are not an element that is present in the periodic table is the combination of Oxygen and Hydrogen (OH), and its ionic charge is 1-.

To name this substance, we write the elements that form it, which are Ba OH, then we see the ionic charges that they have, Ba2+ OH 1- and we change these charges giving the 2+ to the OH and the 1- to the Ba. It would look Ba OH₂; we do not write the 1, and as there is a 2, the OH, has to be between brackets so that the final formula is Ba(OH)₂. What we did is balancing the charges of the elements. In other words, we need 2 OH for every Ba. Hydroxides give an electron to balance the Ba ionic charge.

Barium Hydroxide is an ionic compound because ionic compounds are formed by a metal (Ba) and a nonmetal element (OH), ionic compounds are charged, so when they are in an aqueous solution they conduct electricity because their ions move freely in the solution.                                          

5 0
3 years ago
Alpha particles are<br><br> helium nuclei.<br> electromagnetic waves.<br> electrons.<br> neutrons.
Firdavs [7]
Alpha particles are helium nucleus ! so answer is A !

it is made by ionization of helium, when both the electrons are out , then two unit of positive charge is one helium and thus called alpha particle !
4 0
3 years ago
PLEASE ANWSER THIS!!
Drupady [299]

Answer:

A. because there both high pitched voice and low pitched ( girls have sweet, shrill ,high pitched good voice ) where as boys have horase ,low pitched medium voice )

7 0
2 years ago
Read 2 more answers
Other questions:
  • PLZZZZ HELP ME!!!!!!!!!!! will give brainliest and 20 points why is pinball used to describe the steps in the scientific process
    7·1 answer
  • What is the different between a graph representing data that is directly proportional and a graph that is inversely proportional
    12·1 answer
  • Which of the following methods for increasing the rate of chemical reaction increases the effectiveness of the interactions betw
    10·1 answer
  • Which of these is indication that a chemical reaction has occurred?
    11·2 answers
  • What would happen to the CO2 gas in a soda pop if it is left to chill in a fridge
    14·1 answer
  • Cindy runs 2 km every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next $1, 000 meters, one minute f
    9·1 answer
  • Write the Formulas for these ionic compounds:
    7·1 answer
  • Questions on Electrolysis, pls help if you can!!​
    8·1 answer
  • A refrigerator uses_________________________ energy to move the_________________________ through the refrigerator pipes.
    8·2 answers
  • What is two masses exerting a force on each other an example of?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!