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Natali5045456 [20]
3 years ago
13

PLEASE HELP ME ASAPPPP

Chemistry
2 answers:
Eva8 [605]3 years ago
4 0
Is this from connections academy?

alexandr402 [8]3 years ago
3 0
0 I dint know just guessing on it sorry

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Yo can someone help me out
Allisa [31]

Answer: A

Explanation: liquids and basses are less dense than a solid

6 0
3 years ago
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Which solution below would turn litmus paper red?
Assoli18 [71]
Litmus paper turns red in acidic conditions whether its blue or red litmus ,its not NH3 (ammonia)  , neither is it barium hydroxide (A)  , sodium hydroxide (B) will make it blue or remain blue (depemding on type of paper used ) so it has to be D which is the chemjcal formula for acetic acid , hope this helps ! 
7 0
4 years ago
Atoms share one or more pairs of electrons.<br><br> Options:<br> Ionic Bond or Covalent Bond?
garri49 [273]

Answer:

covalent bonds

Explanation:

ionic transfer of e^- ions formed (charges)

ionic=non-metal+ metal

ex: F+Ca

covalent sharing e^- no true charges

covalent= non-metal+ non-metal

ex: F+P

( my notes)

5 0
3 years ago
What is the difference between metals and non metals on the periodic table
Vilka [71]

Answer:

On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium, iodine, and radon. ... Elements just to the left of the line may be termed metalloids or semimetals and have properties intermediate between those of the metals and nonmetals.

Explanation:

3 0
3 years ago
A sample of methane occupies a volume of 174.0 mL at 25 C and exerts a pressure of 1030.0 mmHg if the volume of the gas is allow
PolarNik [594]

Answer:

The pressure will be 0,37 atm.

Explanation:

We use the Boyle Mariotte´s formula,where for a given mass of gas, at constant temperature, the pressure and temperature vary inversely proportionally. We see here that the initial and final temperature does not vary (298K).

We convert the unit Celsius into Kelvin (0 ° C = 273K) and the unite mmHg into atm (760mmHg=1 atm):

25°C= 25+273=298K   ; (1060mmHgx 1 atm)/760mmHg)=1,39 atm.

We convert unit of volume from ml to L: 174/1000=0,174L and 650/1000=0,650L

P1xV1= P2xV2

1,39 atm x 0,174L =P2 x0,650L

P2= (1,39 atm x 0,174L)/0,650L= 0,37 atm

4 0
4 years ago
Read 2 more answers
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