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
nataly862011 [7]
3 years ago
9

Test to determine whether or not a hypothesis is supported

Chemistry
2 answers:
nordsb [41]3 years ago
6 0
The test determines weither a hypotenuse was supported or not supported
Aleks04 [339]3 years ago
3 0

Answer: experiments are use to test if an hypothesis is right or wrong

Explanation:

You might be interested in
What is avogrados number and why is it useful
gtnhenbr [62]

Answer:

Avogadro's number is 6.022×1023 molecules. With Avogadro's number, scientists can discuss and compare very large numbers, which is useful because substances in everyday quantities contain very large numbers of atoms and molecules.

please mark Brainliest if it helps!

7 0
2 years ago
5. Name five plants and animals that lived in ancient Antarctica
Andrew [12]

Answer:

Two hundred million years ago, Antarctica was a lush, temperate rainforest home to crocodile-sized amphibians and rhinoceros-sized dinosaurs.

Explanation:

Animals:

1 ankylosaurs (the armored dinosaurs), mosasaurs and plesiosaurs (both marine reptilian groups).

2 Cry-oloph-os-auru-s was the ap-ex pre-da-tor of its region when it hunted in the lands of Jur-as-sic Period Antarctica.

3 plesiosaurs.

4 mosasaurs.

Plants:

1 palm trees.

2 ferns and Tanglefoot.

3 Evergreen trees

4 Glossopteris

8 0
2 years ago
A hot lump of 39.9 g of iron at an initial temperature of 78.1 °C is placed in 50.0 mL H 2 O initially at 25.0 °C and allowed to
Drupady [299]

Answer : The final temperature of the mixture is 29.6^oC

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of iron = 0.499J/g^oC

c_2 = specific heat of water = 4.18J/g^oC

m_1 = mass of iron = 39.9 g

m_2 = mass of water  = Density\times Volume=1g/mL\times 50.0mL=50.0g

T_f = final temperature of mixture = ?

T_1 = initial temperature of iron = 78.1^oC

T_2 = initial temperature of water = 25.0^oC

Now put all the given values in the above formula, we get

(39.9g)\times (0.499J/g^oC)\times (T_f-78.1)^oC=-(50.0g)\times 4.18J/g^oC\times (T_f-25.0)^oC

T_f=29.6^oC

Therefore, the final temperature of the mixture is 29.6^oC

8 0
3 years ago
Why is water considered a pure substance and not a mixture?
Minchanka [31]
Water is made of only one molecule which can be chemically separated into hydrogen and oxygen. The answer is D.
5 0
3 years ago
Read 2 more answers
Name 5 metals used to make the penny over the years.
Irina18 [472]
These 5 metals are: zinc,copper,tin,bronze,nickel
6 0
3 years ago
Other questions:
  • Which compund will conduct electricity when it is dissolved in water​
    6·1 answer
  • Two of the seven different pea traits examined by Mendel involved genes that we now know are linked. Knowing this, can you expla
    15·1 answer
  • What is 150 mm expressed in decimeters?<br> a. 1500 dm<br> b. 15 dm<br> c. 1.5 dm<br> d. 0.15 dm
    11·2 answers
  • Help please !!!!!!!!!
    5·1 answer
  • If I a reaction occurs when a piece of metal is placed in a solution what can you conclude about the solution
    7·1 answer
  • What is the formula for the molecular compound disulfur decafluoride?
    7·2 answers
  • Which pair below describes isotopes of the same element?
    9·1 answer
  • When the number of electrons in an atom changes, then the atom's_______ change.
    7·1 answer
  • What is the Lewis dot diagram of ca and br?
    8·1 answer
  • (a) Is a weak Brønsted-Lowry base necessarily a weak Lewis base? Explain with an example.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!