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2 years ago

Hello, So I was wondering if this is correct... Is it?

Chemistry

2 answers:

Sonja [21]2 years ago

4 0

Looks correct but the second to last I would of put abiotic and biotic factors but I don’t know what’s right for you

Olenka [21]2 years ago

3 0

Looks correct although I’m not sure about the last one the answer might not be trend maybe something else

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Practice: How many protons, neutrons and electrons are in the following?

Nata [24]

Answer:

The answer to your question is below

Explanation:

When we have the number of an element followed by a number, that number is the atomic mass.

Atomic mass is the number of protons plus neutrons.

Protons Neutrons

Carbon-13 6 13 - 6 = 7

Chromium-51 24 51- 24 = 27

Strontium-88 38 88 - 38 = 50

Boron-10 5 10 - 5 = 5

6 0

3 years ago

Read 2 more answers

HELPPPPPP PLZZZZZ! FILE ATTACHED BELOW! ASAP PLZZZ!

baherus [9]

90 would be my guess.

4 0

3 years ago

A gas system contains 2.00 moles of O2 and CO2 gas, has an initial temperature of 25.0 oC and is under 1.00 atm of pressure. If

Ainat [17]

Answer:

$V_2=52.2L$

Explanation:

Hello there!

In this case, by bearing to to mind the given conditions, it is firstly possible to determine the initial volume of the closed system via the ideal gas equation:

$PV=nRT\\\\V=\frac{2.00mol*0.08206\frac{atm*L}{mol*K}*298.15K}{1.00 atm} \\\\V=48.9L$

Which is V1 in the Charles' law:

$\frac{T_2}{V_2} =\frac{T_1}{V_1}$

And of course, T1 is 298.15 (25+273.15). Therefore, by solving for V2 as the final volume, we obtain:

$V_2=\frac{V_1T_2}{T_1}\\\\V_2=\frac{48.9L*(45+273.15)K}{(25+273.15)K} \\\\V_2=52.2L$

Best regards!

8 0

3 years ago

Round to 4 significant figures: 42,561

arsen [322]

6 is the fourth significant figures

if the number behind it is 5 or more then 5, you must add 1 to the number and ALL the number behind it will turn into 0

so that the answer is 42560

7 0

3 years ago

Which of the following is NOT a characteristic of a compound?

MissTica

Answer:

I think it's D

sorry if I'm wrong.

Explanation:

4 0

3 years ago