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V125BC [204]
3 years ago
15

different student is given a 10.0g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity fr

om the results of laboratory analysis that the student could use to determine whether the sample was pure.
Chemistry
1 answer:
SCORPION-xisa [38]3 years ago
3 0

Answer:density

Explanation:

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Consider the substances below.
ratelena [41]

Answer:

They have the same number of atoms. = YES

They have different masses. = YES

Explanation:

1 mol of beryllium

• 1 mol of salt

beryllium  = Be = Atomic mass: 9.012182

salt  = NaCl = Molar mass: 58.44 g/mol

1 mol of water

• 1 mol of hydrogen

water  = H2O = Molar mass: 18.01528 g/mol

hydrogen = H = 1g/mole

Which statement is true about these substances?

They have exactly the same mass. = NO

They have different numbers of particles = NO

They have the same number of atoms. = YES

They have different masses. = YES

Avogadro constant means the number of units in one mole of any substance (defined as its molecular weight in grams) is equal to 6.02214076 × 10^{23}.

6 0
3 years ago
4HF(g)+SiO2(s)→SiF4(g)+2H2O(l)
Alecsey [184]
<span>Gallium-72 that is what i got when i did the math for it</span>
8 0
3 years ago
Predict the whether the following reactions are possible or not.
vova2212 [387]

Answer:

1. No

2. No

3. Yes

4. No

5. Yes

6. No

Explanation:

Use the reactivity series. If the element is above it, it is more reactive. More reactive elements can displace less reactive elements from their compounds.

5 0
3 years ago
What is this graph showing?
stepladder [879]

Explanation:

It's a distance-time graph showing the speed of an object

3 0
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Describe use of H₂S an analytical reagent?<br><br>​
Gemiola [76]

Answer:

The main use for hydrogen sulfide is in the production of sulfuric acid and elemental sulfur. ... H2S is used to prepare the inorganic sulfides you need to make those products. As a reagent and intermediate, hydrogen sulfide is beneficial because it can prepare other types of reduced sulfur compounds.

7 0
3 years ago
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