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Norma-Jean [14]
2 years ago
9

PLEASE HELP!!! I'll give brainliest answer

Chemistry
2 answers:
borishaifa [10]2 years ago
7 0

Answer:

Largest to Smallest: Na, K, Mg, N, O, F

Explanation:

ELEN [110]2 years ago
3 0

Answer:

1. MG

2. N

3. F

4. NA

5. O

6. K

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Which correctly lists three characteristics of minerals?
maria [59]

Answer:

The answer is A  hope this helps

Explanation:

6 0
3 years ago
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What would be the total volume of the new solution when it is changed from 0.2 M to 0.04 M?
34kurt
The question is incomplete.

You need two additional data:

1) the original volume
2) what solution you added to change the volume.

This is a molarity problem, so remember molarity definition and formula:

M = n / V in liters: number of moles per liter of solution

To give you the key to answer this kind of questions, supppose the original volumen was 1 ml and that you added only water (solvent).

The original solution was:

V= 1 ml
M = 0.2 M

Using the formula for molarity, M = n / V

n = M×V = 0.2 M × (1 / 10000)l = 0.0002 moles

For the final solution:

n = 0.0002 moles
M = 0.04

From M = n / V ⇒ V = n / M = 0.002 moles / 0.04 M = 0.05 l

Change to ml ⇒ 0.05 l × 1000 ml / l = 50 ml.  This would be the answer for the hypothetical problem that I assumed for you.

I hope this gives you all the cues you need to answer similar problems about molarity.
6 0
3 years ago
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4. In the following, how many digits should be in the solution to have the proper number of sig figs?
yan [13]

Answer:

i guess b maybe the answer

4 0
3 years ago
A 2kg metal cylinder is supplied with 1600J of energy to heat it from 5*C to 13*C. What is the SHC of the metal?
gtnhenbr [62]

Answer:

100Jkg/°C

Explanation:

Given parameters:

Mass of metal  = 2kg

Amount of heat energy  = 1600J

Initial temperature  = 5°C

Final temperature = 13°C

Unknown:

Specific heat capacity of the metal  = ?

Solution:

Specific heat capacity of a body is the amount of heat needed to raise the temperature of unit mass of a body by 1°C.

  H  = m x C x (T₂ - T₁ )

H is the amount of heat

m is the mass

C is the unknown specific heat capacity

T is the temperature

     Insert the parameters and solve;

  1600 = 2 x C x (13 - 5)

   1600  = 16C

        C = 100Jkg/°C

3 0
3 years ago
Describe how the catalyst, zymase speeds up the reaction shown
Vlad1618 [11]

Describe how the catalyst, zymase speeds up the reaction shown

The catalyst zymase speeds up the reaction by catalyzing the fermentation of sugar into ethanol and carbon dioxide. It is mostly present in yeasts. 

7 0
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