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
Arturiano [62]
3 years ago
15

What makes an article a primary source

Chemistry
2 answers:
Kitty [74]3 years ago
8 0
It’s written by some one that was there as show on google your welcome
Flura [38]3 years ago
8 0

Answer:

it is written by the researcher

Explanation:

Apex just got it right

You might be interested in
A 256 mL sample of HCl gas is in a flask where it exerts a force (pressure) of 67.5 mmHg. What is the pressure of the gas if it
Effectus [21]

Answer:

The pressure in the new flask would be 128\; \rm mmHg if the \rm HCl here acts like an ideal gas.  

Explanation:

Assume that the \rm HCl sample here acts like an ideal gas. By Boyle's Law, the pressure P of the gas should be inversely proportional to its volume V.

For example, let the initial volume and pressure of the sample be V_1 and P_1. The new volume V_2 and pressure P_2 of this sample shall satisfy the equation: P_1 \cdot V_1 =P_2 \cdot V_2.

In this question,

  • The initial volume of the gas is V_1= 256\; \rm mL.
  • The initial pressure of the gas is P_1 = 67.5\; \rm mmHg.
  • The new volume of the gas is V_2 = 135\; \rm mL.

The goal is to find the new pressure of this gas, P_2.

Assume that this sample is indeed an ideal gas. Then the equation P_1 \cdot V_1 =P_2 \cdot V_2 should still hold. Rearrange the equation to separate the unknown, P_2. Note: make sure that the units for V_1 and V_2 are the same before evaluating. That way, the unit of

\begin{aligned} & P_2\\ &= \frac{P_1 \cdot V_1}{V_2} \\ &= \frac{256\; \rm mL \times 67.5\; \rm mmHg}{135\; \rm mL} \\ & \approx 128\; \rm mmHg\end{aligned}.

3 0
3 years ago
I need help on this question
Deffense [45]
B. I’m sorry if I’m wrong ! Wasn’t sure about this question .
5 0
3 years ago
Read 2 more answers
The pOH of a solution is 4.2. Which of the following is true about the solution?
den301095 [7]

Answer:

It is basic and has a pH of 9.8.

Explanation:

pOH = 4.2

we will determine its pH.

pOH + pH = 14

pH = 14 - pOH

pH = 14 - 4.2

pH = 9.8

According to pH scale the the pH lower than 7 is consider acidic while pH of seven is neutral and pH greater than 7 is basic.

The given solution has pH 9.8 it means it is basic.

4 0
3 years ago
How many significant figure does 60600 have?
irga5000 [103]
The answer would be 5. because the last zero is a holding place because the number is in front of the decimal. They other zero counts because they are being sandwiched.<span />
7 0
3 years ago
Read 2 more answers
Which of the following can be used to find the identity of an unknown organism?
drek231 [11]
Taxonomic key hope this helps
3 0
3 years ago
Read 2 more answers
Other questions:
  • H2 + Br2 → 2HBr If 2.23 g of hydrogen (H2) reacts completely, how many grams of hydrogen bromide (HBr) is formed? (mw Br=79.9) Q
    14·1 answer
  • How can you write tht in mg ??
    13·2 answers
  • Number of moles in 38.3g of BeO
    11·1 answer
  • Where does the term carbohydrate come from? Explain by referring to the parts of this word
    11·1 answer
  • 10. Which of these measurements have four significant figures? *
    13·1 answer
  • Dinitrogen tetraoxide, N2O4, decomposes to nitrogen dioxide, NO2, in a first-order process. If k = 1.5 x 103 s-1 at 5 ºC and k =
    13·1 answer
  • Your grandfather is a farmer. You hear him complain about how his crops are not doing well. You know that we have the same amoun
    6·1 answer
  • SOMEONE PLS HELP ME WITH THE FIRST QUESTION IN THE BOTTOM.
    10·2 answers
  • PLEASE HELP I HAVE TO DO THIS BENCHAMRK QUESTION!!!
    14·1 answer
  • Help me pls I will mark you as brain
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!