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3 years ago

What is the most likely metal ion present in the fireworks shown in the image?

Chemistry

2 answers:

Tasya [4]3 years ago

8 0

A because of the way it looks and how it works

Inga [223]3 years ago

7 0

Answer:

It's A I just took the test

Explanation:

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What makes an acid acidic? a) Number of protons in a molecule b) Temperature c) Chemical structure d) Phase

charle [14.2K]

Answer:

Explanation:

Chemical structure

7 0

2 years ago

Put the levels of organization in order from smallest to largest

Vikki [24]

Answer:

Organism , Population , Community , Ecosystem .

Explanation:

Organism is one type of species .

Population is a group of same species living together .

Community is a group of different species living together .

Ecosystem is a large group of community of species and its environment consisting of biotic and abiotic factor .

3 0

2 years ago

How many gallons of gasoline that is 5% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that

Amanda [17]

Answer:

$V_1= 3000 gal$

Explanation:

We have 3 solutions:

Solution 1 (with ethanol)
Solution 2 (no ethanol)
Final solution

$V_f=V_1 + V_2$

and for the ethanol:

$V_f*0.03=V_1*0.05 + V_2*0$

$V_f=V_1 \frac{5}{3}$

Combining:

$V_1 \frac{5}{3}=V_1 + V_2$

$V_1 \frac{2}{3}= V_2$

$V_1= \frac{3}{2} V_2$

If V2=2000 gal:

$V_1= \frac{3}{2} 2000 gal$

$V_1= 3000 gal$

8 0

3 years ago

What is the connection of ascorbic acid when one tablet is dissolved in 200cm cubed of water ?

BartSMP [9]

Answer:

Option-D: 2.3 × 10⁻³ mol/dm³

Explanation:

Calculate moles of ascorbic acid,

Moles = Mass / M.Mass

Moles = 0.080 g / 176 g/mol

Moles = 0.00045 mole

Also,

Molarity = Moles / Vol. in dm³

Molarity = 0.00045 mol / 0.20 dm³

Molarity = 0.00227 mol.dm⁻¹ or 2.3 × 10⁻³ mol/dm³

5 0

2 years ago

Chemists investigated an unknown substance and found it to have the following characteristics:

juin [17]

D the substance is a homogeneous mixture

8 0

3 years ago