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
Gala2k [10]
3 years ago
6

892.970 cm2 to four significant figures

Chemistry
1 answer:
Sophie [7]3 years ago
5 0

Answer:

Explanation:

There is a trick to this. Counting out the 4 places is easy enough.

Start at the 8 and count to your right. You land on the nine, but that is not quite your answer.

The 7 influences the 9 and the nine gets bumped up which makes it a 10. but you just record the zero part. The 1 gets added to the 2.

That in turn influences the 2 which makes it a three. So your answer is

893.0

The trick is that you must include the 0. You are guaranteeing that you know the accuracy of the fourth place. Weird but true.

It helps just slight to convert this to scientific notation.

8.9297 * 10^2  = 8.930 * 10^2

You get the same rounding problem as discussed above, but it might be a little easier to see.

You get the same answer and you have to go through the same steps.

You might be interested in
Wht is the process of science cyclical and not a linear process??​
Dima020 [189]

Answer:The process of science is iterative.

Science circles back on itself so that useful ideas are built upon and used to learn even more about the natural world. This often means that successive investigations of a topic lead back to the same question, but at deeper and deeper levels. Let's begin with the basic question of how biological inheritance works. In the mid-1800s, Gregor Mendel showed that inheritance is particulate — that information is passed along in discrete packets that cannot be diluted. In the early 1900s, Walter Sutton and Theodor Boveri (among others) helped show that those particles of inheritance, today known as genes, were located on chromosomes. Experiments by Frederick Griffith, Oswald Avery, and many others soon elaborated on this understanding by showing that it was the DNA in chromosomes which carries genetic information. And then in 1953, James Watson and Francis Crick, again aided by the work of many others, provided an even more detailed understanding of inheritance by outlining the molecular structure of DNA. Still later in the 1960s, Marshall Nirenberg, Heinrich Matthaei, and others built upon this work to unravel the molecular code that allows DNA to encode proteins. And it doesn't stop there. Biologists have continued to deepen and extend our understanding of genes, how they are controlled, how patterns of control themselves are inherited, and how they produce the physical traits that pass from generation to generation. The process of science is not predetermined.

Any point in the process leads to many possible next steps, and where that next step leads could be a surprise. For example, instead of leading to a conclusion about tectonic movement, testing an idea about plate tectonics could lead to an observation of an unexpected rock layer. And that rock layer could trigger an interest in marine extinctions, which could spark a question about the dinosaur extinction — which might take the investigator off in an entirely new direction. At first this process might seem overwhelming. Even within the scope of a single investigation, science may involve many different people engaged in all sorts of different activities in different orders and at different points in time — it is simply much more dynamic, flexible, unpredictable, and rich than many textbooks represent it as. But don't panic! The scientific process may be complex, but the details are less important than the big picture …

4 0
3 years ago
What can bond or join together to form molecules?
ioda

Answer:

Atoms.

They come together so they can form molecules (because of their electrons)

It becomes a covalent bond

Explanation:

5 0
3 years ago
Read 2 more answers
A particular reaction, a → products, has a rate that slows down as the reaction proceeds. the half-life of the reaction is found
irga5000 [103]
Generally, the rate of a reaction will decrease with increasing temperature, although there are some exceptions in the case of non-elementary reactions. However it is more likely that the first statement is false.
Half-life is a measure of the time taken for a to reach 1/2 of its initial concentration, and is generally completely independent of reagent concentration within a first order reaction, which is likely what this reaction is, therefore statement 2 is also likely false.
Hope this helps!
8 0
4 years ago
Some one help me please I'm stuck Show using two conversion factors how you would convert from 0.020 kg into mg.
julia-pushkina [17]

Answer:

=2.0x10^4mg

Explanation:

Hello there!

In this case, when performing units conversions involving two proportional factors we need to make sure we first convert to the base unit and then to the target one; thus, since 1 kg = 1000 g and 1 g = 1000 mg, we set up the following expression:

=0.020kg*\frac{1000g}{1kg} *\frac{1000mg}{1g} \\\\=2.0x10^4mg

Best regards!

4 0
3 years ago
352 mL of chlorine exerts a pressure of 680 mmHg. What will the volume
Drupady [299]

Answer:

The answer would be 0.198 liters.

Explanation:

Message me for any questions.

7 0
3 years ago
Other questions:
  • What kind of charge would the oxygen atom have compared to the hydrogen atoms
    8·1 answer
  • Which of the following is the correct description of momentum?
    13·1 answer
  • An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this electron
    14·2 answers
  • What is the [OH] if the pH is 4.7<br>A. 4.7<br>B. 5.0<br>C. 4.7 x 10 -10<br>D. 5.0 x 10 -10​
    9·1 answer
  • Campare how the structure and function of a plant is similar to the human body
    13·1 answer
  • 3. A thin lead apron is used to protect patients from harmful X rays. If the sheet measures 75.0 cm by 55.0 cm by 0.10 cm, and t
    7·1 answer
  • Calculate the number of moles of solute present in 185.0 mL of a 1.50 mol/L solution of HCl.
    10·1 answer
  • You are planning on making punch and you would like to cool it with ice. At the store, there are 2 different one-pound bags of i
    6·1 answer
  • Which of these describes a Mole in Chemistry?
    5·1 answer
  • Which of these is true about the total amount of energy in a closed system?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!