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harina [27]
3 years ago
7

Can someone please help!! I’m in a test!!

Chemistry
1 answer:
Trava [24]3 years ago
3 0

Answer:

#1

Explanation:

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The following reaction is an example of a 4NH3(g) + 5O2(g) →4NO(g) + 6H2O(g)<br><br><br><br>​
sashaice [31]

4NH2(g)+5O2(g) ---->()4NO(g)+6H2O(g)

8 0
3 years ago
Which would have more volume? A mass of mercury or the same mass of bromine. The density of mercury is 13.5g/ml. The density of
deff fn [24]

Explanation:

Given that,

The density of mercury is 13.5 g/mL

The density of Bromine is 3.12 g/cm³

It is mentioned that Mercury and bromine have the same mass. Let d₁,d₂ are the density of Mercury and Bromine. V₁ and V₂ are their volumes. So,

\text{density}=\dfrac{\text{mass}}{\text{volume}}

\text{mass}=\text{density}\times \text{volume}

Since, mass is same.

So,

d_1V_1=d_2V_2\\\\\dfrac{d_1}{d_2}=\dfrac{V_2}{V_1}\\\\\dfrac{13.5}{3.12}=\dfrac{V_2}{V_1}\\\\4.32=\dfrac{V_2}{V_1}\\\\V_2=4.32\times V_1

Hence, the volume of bromine is more than that of mercury. It is 4.32 times of the density of mercury.

3 0
4 years ago
1.26 * 10^4 + 2.50 * 10^4 in sceintific notation
eduard
Hello! I can help you with this. First, convert them into it’s written out standard form. 10^4 is 10,000. 10,00 * 1.26 is 12,600. 10,000 * 2.5 is 25,000. 12,600 + 25,000 = 37,600 or 3.76 * 10^4 in scientific notation. The answer in scientific notation is 3.76 * 10^4.
8 0
3 years ago
 Help ASAP only right answers only no spam don’t answer if you don’t know
Hoochie [10]

Answer:

NO. 10.

performed experiments

NO. 11.

Inference

Explanation:

No 10.

in order to prove that Mary Mellon was in fact infected by typhoid proper experiments needs to be carried out.

No. 11

inference means an assumption due to the situation.

3 0
3 years ago
When a mixture of oxygen and hydrogen is ignited in a test tube, the reaction shown occurs. Hydrogen + Oxygen → Water + Energy S
grin007 [14]

Answer:

products

Explanation:

In chemistry, chemical reactions is the combination of two or more substances to yield other substances. The substances that react is called REACTANTS while the substances formed after the reaction is called PRODUCTS.

According to this question, a mixture of oxygen and hydrogen is ignited in a test tube as follows:

Hydrogen + Oxygen → Water + Energy

In this reaction, the substances being combined (usually found on the left side of the equation) are hydrogen and oxygen. Hence, oxygen and hydrogen are REACTANTS. Also, the substances produced as a result of the reaction is water (H2O). The PRODUCTS of the reaction is WATER.

5 0
3 years ago
Read 2 more answers
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