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Akimi4 [234]
2 years ago
5

What document, signed by the district attorney, authorizes the search of a building for the purpose of collecting evidence at a

crime scene?
Chemistry
2 answers:
pshichka [43]2 years ago
7 0
A search warrant brainliest pls
Ray Of Light [21]2 years ago
3 0

Answer:

A search warrant is a document that is signed by the district attorney, and authorizes the search of a building for the purpose of collecting evidence at a crime scene.

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a piece of metal is heated to 100℃ and placed into 75.0g of water in a coffee-cup calorimeter. Initially, the temperature of the
Jet001 [13]

Answer:

The mass of this piece of metal is 37.68g

Explanation:

<u>Step 1:</u> Given data

q = m*ΔT *Cp

⇒with m = mass of the substance

⇒with ΔT = change in temp = final temperature T2 - initial temperature T1

⇒with Cp = specific heat (Cpwater = 4.184J/g °C) (Cpmetam = 0.9J/ g °C)

<u>Step2 : </u>

For this situation : we get for q = m*ΔT *Cp

q(lost, metal) = q(gained, water)

- mass of metal(ΔT)(Cpmetal) = mass of water (ΔT) (Cpwater)

-m (30.6 -100) * 0.9 = 75g *( 30.6 - 23.1) * 4.184J / g °C

-m * (-69.4) * 0.9 = 75g * (7.5) * 4.184J / g °C

-m * (-69.4) *0.9 = 2353.5

-m = 2353.5 / (-69.4 *0.9) = -37.68

m = 37.68g

The mass of this piece of metal is 37.68g

4 0
3 years ago
A solid has shape and volume?
tia_tia [17]

Answer:

A solid has a definite volume and shape, a liquid has a definite volume but no definite shape, and there is no definite volume or shape of a gas. Usually, the transition from solid to liquid does not change a substance's volume substantially.

Explanation:

6 0
2 years ago
express in word equation and chemical equation of the chemical reaction when potassium chlorate is heated.​
IgorLugansk [536]

Answer:

Word equation: <u>Potassium chlorate → Potassium chloride + Oxygen</u>

Chemical equation: <u>KClO₃ → KCl + O₂</u>

Explanation:

<em>This is decomposition reaction so there will only be one reactant, which is potassium chlorate.</em>

The chemical equation will be:

KClO₃ → KCl + O₂

The balanced equation would be:

2KClO₃ → 2KCl + 3O₂

The word equation will be:

Potassium chlorate → Potassium chloride + Oxygen

8 0
2 years ago
When 2.50 grams of copper reacts with oxygen?
ycow [4]
 <span>Mass oxigen = 2.81 - 2.50 = 0.31 g 
Moles O = 0.31 g / 15.9994 g/mol =0.0194 

moles Cu = 2.50 g / 63.546 g/mol =0.0393 

we divide by the smallest number 
0.0194 / 0.0194 = 1 => O 
0.0393 / 0.0194 = 2 => Cu 
the formula is Cu2O ( Copper (I) oxide )
Ya got this</span>
7 0
3 years ago
How many mL are in 7.3 dL?
Arte-miy333 [17]

Answer:

730 mL which is .73 L

Explanation:

8 0
3 years ago
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