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
Bingel [31]
3 years ago
12

Select the correct answer.

Chemistry
2 answers:
Yanka [14]3 years ago
7 0

Answer:C

Explanation: because my tutor said

padilas [110]3 years ago
4 0
I think I would be C, because both the iron bars are increasing in temperature but at different rates and would be taking heat from the area
You might be interested in
PLEASE HELP!!!!! WORTH 12 POINTS EACH!!!!!!!
sdas [7]
Please mark me the brainiest here is the answer
PSI-volts 
<span>pipes-conductors </span>
<span>pump-battery </span>
<span>valve-switch </span>
<span>restriction-resistance </span>
<span>water meter-ammeter </span>
<span>water-electrons </span>
<span>high pressure output- + voltage </span>
<span>low pressure intake- -voltage </span>
<span>valve closed-open circuit </span>
<span>valve open-closed circuit </span>
<span>liters/second-amps</span> 

7 0
4 years ago
Read 2 more answers
HELPPPPP MEEEEEEEEEEEE
Kazeer [188]

Answer:

Alpha particle or helium nuclei.

Explanation:

Alpha particle:

Alpha particle is emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

Properties of alpha radiation:

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

4 0
3 years ago
Oily vegetable or animal substances are _ (choose only one answer)
Vlad [161]
The answer is 'lipids'

hopefully this helps
6 0
3 years ago
A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: CO2 , 1
jolli1 [7]

Answer: a) 211 mm Hg

b) 0.629 grams

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_1+p_2+p_3+p_4

p_{total} = total pressure = 750 mmHg

p_{CO_2} = 124 mm Hg

p_{Ar} = 218 mm Hg

p_{O_2} = 197 mm Hg

p_{He} = ?

750 mmHg=124 mm Hg+218 mm Hg+197 mm Hg+p_{He}

p_{He}=211mmHg

Thus  the partial pressure of the helium gas is 211 mmHg.

b) According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = 211 mmHg = 0.28 atm   (760mmHg=1atm)

V= Volume of the gas = 13.0 L

T= Temperature of the gas =  282 K  

R= Gas constant = 0.0821 atmL/K mol

n= moles of gas= ?

n=\frac{PV}{RT}=\frac{0.28\times 13.0}0.0821\times 282}=0.157moles

Mass of helium= moles\times {\text {molar mass}}=0.157\times 4=0.629g

Thus mass of helium gas present in a 13.0-L sample of this mixture at 282 K is 0.629 grams

8 0
4 years ago
Elements and compounds are 2 types of what?
GalinKa [24]
I think the answer is atoms.
3 0
3 years ago
Read 2 more answers
Other questions:
  • How can you guess the name of the element using the chemical formula ?
    8·2 answers
  • How much heat energy is required to raise the temperature of 5 kilograms of coal from 20°C to 220°C?
    13·1 answer
  • What reagent would distinguish between Ag+ and Fe3+?
    13·1 answer
  • A 50.0 −mL sample of 1.50×10−2 M Na2SO4(aq) is added to 50.0 mL of 1.28×10−2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains
    5·1 answer
  • Californium-252 is bombarded with a boron-10 nucleus to produce another nuclide and six neutrons. what nuclide forms?
    14·2 answers
  • Consider the reaction. mc032-1.jpg At equilibrium, the concentrations of the different species are as follows. [H2O] = 0.077 M [
    7·2 answers
  • Which of the following landforms (physical features) was formed when two landmasses collided?
    9·1 answer
  • 7 Think about a large pile of rocks. The rock at the top of the pile has more
    12·1 answer
  • HELPPP !!
    11·2 answers
  • Will give brainliest if correct. Which of these bonds should be classified as a polar covalent bond?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!