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Roman55 [17]
2 years ago
5

There are some cells that do not have DNA. O True O false

Chemistry
2 answers:
raketka [301]2 years ago
8 0

Answer:

false

Explanation:

valkas [14]2 years ago
8 0
It’s false hope this helps
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A sample of 1.00 moles of oxygen at 50°C and 98.6 kPa, occupies what volume?
enyata [817]

Answer:

27.22 dm³

Explanation:

Given parameters:

number of moles = 1 mole

temperature= 50°C, in K gives 50+ 273 = 323K

Pressure= 98.6kpa in ATM, gives 0.973 ATM

Solution:

Since the unknown is the volume of gas, applying the ideal gas law will be appropriate in solving this problem.

The ideal gas law is mathematically expressed as,

Pv=nRT

where P is the pressure of the gas

V is the volume

n is the number of moles

R is the gas constant

T is the temperature

Input the parameters and solve for V,

0.973 x V = 1 x 0.082 x 323

V= 27.22 dm³

5 0
3 years ago
The notation for the nuclide 13755Cs gives information about
k0ka [10]

Answer is (3) both mass number and atomic number.

The notation is ₅₅¹³⁷Cs. The Cs represents the chemical symbol of Caesium element. The subscript number at the left hand side of the symbol indicates the atomic number. Hence, atomic number of Cs is 55. The superscript number at the left hand side of the symbol shows the mass number. Hence, the mass number of the Cs is 137.

5 0
3 years ago
Which of the following is an acid?<br><br> Be(OH)2<br> HCl<br> LiBr<br> NH3
Lyrx [107]

Answer:

HCl is the correct answer

4 0
3 years ago
Read 2 more answers
What is the pressure in mm hg of a 0.025 mole sample of co2 at 350 k in a 200 l container?
Leni [432]

Answer:

0.65mmHg

Explanation:

Take R =8.314J/mol/K

V=200dm3

PV=nRT

P=0.025×8.314×623/200

=0.65mmHg

7 0
1 year ago
Which of the following do water, rust, and salt have in common?
Cloud [144]
The answer is "elements" :)
6 0
2 years ago
Read 2 more answers
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