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natulia [17]
3 years ago
6

Which subatomic particles were discovered, disproving the part of Dalton's atomic theory that said an atom is "indivisible?" Que

stion 3 options: A) neutrons B) ions C) protons D) electrons E) isotopes
Chemistry
1 answer:
erica [24]3 years ago
6 0

Answer:  D) Electrons

Explanation:

Daltons atomic theory was electrons

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The exhaust gas from an automobile contains 3% by volume of carbon monoxide (CO). Express this concentration in mg/m3 at 25oC an
ser-zykov [4K]

Answer:

24540\frac{mg}{m^3}

Explanation:

Hello,

In this case, since the 3% by volume is represented as:

\frac{3L\ CO}{L\ gas}

By using the ideal gas equation we compute the density of CO:

\rho =\frac{MP}{RT} =\frac{28g/mol*1atm}{0.082\frac{atm*L}{mol*K}*298K}= 0.818g/L

Then we apply the conversion factors as follows:

=\frac{3L\ CO}{100L\ gas}*\frac{0.818g\ CO}{1L\ CO} *\frac{1000mg\ CO}{1g\ CO} *\frac{1000L\ gas}{1m^3\ gas} \\\\=24540\frac{mg}{m^3}

Regards.

4 0
4 years ago
How do you balance: Al+Fe3O4=Al2O3+Fe ?
liraira [26]

Answer:

8Al+3Fe3O4=4Al2O3+9Fe

3 0
3 years ago
Read 2 more answers
Help please
mihalych1998 [28]

Explanation:

1. Cross-pollination between true-breeding plant with green pods and true-breeding plant with yellow pods.

2.The yellow pods do not appear because the heterozygous dominant for the green pods. So the green is dominant while the yellow is recessive. So the green is what comes out has the result..

8 0
3 years ago
How many moles of atoms are in each elemental sample?
Vlada [557]

Answer:

Moles = mass(m) / Molar mass (M)

A. 1.24g of Zn

m = 1.24g

M = 65.4 g/mol

moles of Zn = 1.24g/ 65.4g/mol

= 0.01896mol

B. 28.1 g Ar

m = 28.1g

M(Ar) = 39.9g/mol

moles of Ar = 28.1g/39.9g/mol

= 0.7043 mol

C. 84.0 g Ta

m = 84.0g

M(Ta) = 181g/mol

moles of Ta = 84.0g/181g/mol

= 0.4641 mol

D. 2.29x10^-2 g Li

m = 2.29x10^-2 g

M(Li) = 6.9g/mol

moles of Li = 2.29x10^-2 g / 6.9g/mol

= 0.0033 mol

Hope this helps

8 0
3 years ago
I would appreciate if somebody help me please!!! Pt2 posted
nignag [31]

The disease prevention methods are as follows:

  • Influenza: Avoid close contact with sick people; Cover your mouth and nose, Clean your hands
  • Salmonella: wash hands properly; keep food area clean; cook food properly
  • Type 2 Diabetes : exercise regularly; reduce sugar intake; quit smoking
  • HIV/AIDS: Avoid sharing of unsterilized sharp objects; avoid unprotected sex; screen blood before transfusion
  • Heart disease: avoid trans fat; exercise regularly; avoid smoking
  • Whooping cough: wear face masks; wash regularly; get vaccinated

<h3>What is the disease prevention?</h3>

Disease prevention refers to the steps taken to protect oneself from developing a particular disease.

The disease prevention methods for the given diseases is as follows:

  • Influenza: Avoid close contact with sick people; Cover your mouth and nose, Clean your hands
  • Salmonella: wash hands properly; keep food area clean; cook food properly
  • Type 2 Diabetes : exercise regularly; reduce sugar intake; quit smoking
  • HIV/AIDS: Avoid sharing of unsterilized sharp objects; avoid unprotected sex; screen blood before transfusion
  • Heart disease: avoid trans fat; exercise regularly; avoid smoking
  • Whooping cough: wear face masks; wash regularly; get vaccinated

In conclusion, disease prevention is the best policy in health care.

Learn more about disease prevention at: brainly.com/question/13341436

#SPJ1

8 0
2 years ago
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